Tool · Caliber Lookup
The movement behind the dial
Every Seiko caliber tells you roughly when a watch was made. Search the database — it’s the same one that narrows the decade in the serial decoder.
| Caliber | Type | Jewels | Years | Family | Notes |
|---|---|---|---|---|---|
| 6601 | automatic | 17 | 1961–1969~ | Seiko 5 / Sportsmatic | Foundational Sportsmatic automatic, non-calendar (no day/date). Offered in 17/19/21-jewel grades; uses Seiko's bidirectional Magic Lever winding. 6601A from 1961, later 6601B revision. |
| 6605 | automatic | 17 | 1962–1969~ | Seiko 5 / Sportsmatic | Early Sportsmatic automatic calendar movement (c.1962), part of the first-generation Suwa 5/calendar family. Documentation is sparse; date window present on calendar variants. |
| 6205 | automatic | 17 | 1963–1969~ | Sportsmatic | 62-series automatic with date complication used across Sportsmatic models. |
| 6206 | automatic | 17 | 1963–1969~ | Sportsmatic | Day-date automatic in the 62xx family; mechanically related to the 6217 diver caliber. |
| 6602 | automatic | 17 | 1963–1973~ | Sportmatic / 5 | Early Seiko 5 / Sportmatic workhorse. |
| 6606 | automatic | 21 | 1963–1970~ | Seiko 5 / Sportsmatic | Sportsmatic 5 automatic day-date (non-quickset), 21 jewels. 6606B launched 1965; traces back to the Suwa 410, Seiko's first '5' date movement. Direct sibling of the 6619. |
| 5722 | manual | 25 | 1964–1968 | King Seiko 44KS | Hand-wind 18000 vph 'second-generation' King Seiko caliber, Daini-built; the 5722-9990/9991 are the classic 'KSK' that inspired the modern KS reissue.5722-9990 · 5722-9991 · 5722-9000 |
| 6217 | automatic | 17 | 1965–1970 | Diver | Powers Seiko's first dive watch, the 62MAS (150m); part of the 62-series automatic family, sharing base architecture with the 6206 day-date.6217-8000 62MAS · 6217-8001 62MAS |
| 4005 | automatic | 17 | 1966–1977~ | Bell-Matic | Date-only Bell-Matic alarm caliber, less common than the day/date 4006. Window widened from the original draft's over-narrow 1968-1969 claim.4005-6011 · 4005-7000 |
| 4006 long run | automatic | 17 | 1966–1982 | Bell-Matic | Day/date variant of the Bell-Matic automatic alarm watch; offered in 17, 21 or 27 jewels. Produced from 1966 until Bell-Matic production wound down in the early 1980s.4006-7011 · 4006-6001 UFO · 4006-6021 |
| 6106 | automatic | 17 | 1966–1978~ | Seiko 5 | Day-date automatic workhorse with quick-set calendar, used across Seiko 5 and dressier 5 lines.6106-8227 · 6106-7107 |
| 6118 | automatic | 25 | 1966–1977~ | Seiko 5 / Sportsmatic | Higher-jewel day-date automatic used in Seiko 5 and Sportsmatic Deluxe pieces.6118-8000 · 6118-8050 |
| 4420 GS | manual | 25 | 1967–1970 | Grand Seiko 44GS | Hand-wind 18000 vph 44GS movement; the 4420-9000 case established Taro Tanaka's 'Grammar of Design' that defines modern Grand Seiko styling.4420-9000 · 4420-9990 |
| 5106 | automatic | 33 | 1967–1972~ | Seiko 5 | Day-date 51-Stream automatic (often dial-marked 'Presmatic'), 19800 bph, 33 functional jewels, hacking and instant date change; introduced 1967 to replace the 6218, with the 5146 as its hi-beat sibling.5106-7000 · 5106-8000 · 5106-9000 |
| 5126 | automatic | 23 | 1967–1979 | Seiko 5 | Core day-date Seiko 5 workhorse of the 51-Stream family, 19800 bph, 23 jewels, bilingual day wheel and crown quickset date; one of the most produced vintage Seiko automatics.5126-7000 · 5126-8090 · 5126-8100 |
| 5139 | automatic | 27 | 1967–1972~ | Seiko 5 | Deluxe ('DX') 27-jewel day-date member of the 51-Stream Seiko 5 family, 19800 bph; introduced 1967 and phased out around 1969 in favour of the hi-beat 5146.5139-7000 · 5139-6000 |
| 6117 | automatic | 17 | 1967–1977~ | Navigator Timer / GMT | GMT/24-hour caliber; basis of the Navigator Timer and World Time models. The 6117B adds a hacking feature over the 6117A.6117-6400 Navigator Timer · 6117-6419 · 6117-8000 World Time |
| 6145 GS | automatic | 25 | 1967–1976~ | Grand Seiko 61GS hi-beat | Grand Seiko 36000 vph hi-beat automatic with date, Suwa-built; the date-only sibling of the 6146 in the 61GS line.6145-8000 · 6145-8010 |
| 6146 GS | automatic | 25 | 1967–1976~ | Grand Seiko 61GS hi-beat | Grand Seiko day-date 36000 vph hi-beat automatic, Suwa-built; the day-date version of the 6145 in the 61GS line.6146-8000 · 6146-8020 |
| 6159 GS | automatic | 25 | 1967–1976 | Grand Seiko 61GS hi-beat | Grand Seiko 36000 vph hi-beat caliber originally for the GS line; the 6159-7001 is Seiko's first 300m professional hi-beat diver.6159-7000 hi-beat diver · 6159-7001 · 6159-7010 |
| 6215 | automatic | 35 | 1967–1970 | Diver | High-jewel automatic in the 6215-7000 300m professional diver, predecessor to the 6159-7000.6215-7000 300m diver |
| 6245 GS | automatic | 35 | 1967–1970 | Grand Seiko 62GS | First automatic Grand Seiko (62GS); date-only, with the signature recessed crown at 4 and no crown at 3 case design.6245-9000 62GS · 6245-9001 62GS |
| 6246 GS | automatic | 35 | 1967–1970 | Grand Seiko 62GS | Day-date version of the 62GS automatic Grand Seiko caliber, sibling to the date-only 6245.6246-9000 62GS · 6246-9001 62GS |
| 4500 | manual | 25 | 1968–1971~ | King Seiko 45KS | Hi-beat 36000 vph hand-wind base caliber for the 45KS line; no date complication.4500-7000 · 4500-7001 |
| 4502 | manual | 25 | 1968–1971~ | King Seiko 45KS | Date-equipped variant of the 4500 hi-beat 36000 vph 45KS hand-wind movement.4502-7000 · 4502-7010 |
| 4520 GS | manual | 25 | 1968–1972~ | Grand Seiko 45GS | Hi-beat 36000 vph hand-wind no-date 45GS movement, Daini-built; chronometer-grade adjustment.4520-8000 · 4520-8010 |
| 4522 GS | manual | 25 | 1968–1973 | Grand Seiko 45GS | Date version of the 45GS hi-beat 36000 vph hand-wind, Daini-built; one of the most collectible vintage GS hand-winds.4522-7000 · 4522-7010 · 4522-8000 |
| 5601 | automatic | 23 | 1968–1978~ | Lord Matic | Date-only automatic in the early Lord Matic line, 21600 bph with quickset date.5601-7000 · 5601-8000 |
| 5605 | automatic | 23 | 1968–1978~ | Lord Matic | Day-date automatic, 21600 bph, core Lord Matic (LM) workhorse caliber.5605-7000 · 5605-7070 |
| 5606 | automatic | 21 | 1968–1978 | Lord Matic | Lord Matic dress automatic. |
| 5625 | automatic | 25 | 1968–1978~ | Lord Matic | 25-jewel date-only automatic, 21600 bph, Lord Matic and LM Special.5625-7000 · 5625-7110 |
| 5645 | automatic | 25 | 1968–1978~ | Seiko 5 | 25-jewel date automatic used in Seiko 5 and 5 DX, 21600 bph.5645-7000 · 5645-7010 |
| 5646 | automatic | 25 | 1968–1978~ | Seiko 5 | 25-jewel day-date automatic, Seiko 5 DX, 21600 bph with quickset day-date.5646-7010 · 5646-8000 · 5646-7000 |
| 6105 | automatic | 17 | 1968–1977 | Diver | 6105-8110 'Captain Willard' diver. |
| 6185 GS | automatic | 25 | 1968–1973~ | Grand Seiko 61GS V.F.A. | Hi-beat Grand Seiko V.F.A. (Very Fine Adjusted) date caliber, factory-regulated to roughly +/-2 sec/day.6185-8020 · 6185-8021 |
| 6186 GS | automatic | 25 | 1968–1973~ | Grand Seiko 61GS V.F.A. | Day-date Grand Seiko V.F.A. hi-beat caliber; the day-date sibling of the 6185 high-accuracy movement.6186-8000 · 6186-8010 |
| 7005 | automatic | 17 | 1968–1980~ | Seiko 5 | Entry Seiko 5 automatic with day-date, non-hacking non-handwinding; common Japan-domestic/Asian workhorse of the late 1960s and 1970s.7005-8030 · 7005-8042 · 7005-7140 |
| 7006 | automatic | 17 | 1968–1980~ | Seiko 5 | Single-date sibling of the day-date 7005 in the early Seiko 5 line.7006-8030 · 7006-7140 |
| 4580 GS | manual | 25 | 1969–1973~ | Grand Seiko 45GS VFA | Very Fine Adjusted (VFA) hi-beat 36000 vph hand-wind 45GS, Daini-built, factory-regulated to roughly +/-2 sec/day; top of the vintage GS hand-wind range.4580-7010 · 4580-7000 |
| 5146 | automatic | 27 | 1969–1973~ | Seiko 5 | Hi-beat 28800 bph 'Presmatic' day-date automatic, 27 or 30 jewels; the most advanced and last caliber of the 5100 family, introduced 1969 as the 5139 was retired.5146-7000 · 5146-7040 · 5146-5021 |
| 5206 | automatic | 23 | 1969–1977~ | Lord Matic | Date-only Lord Matic (LM) hi-beat 28800 bph automatic, 23 or 25 jewels, Daini-built dress movement with instant midnight date change; evolved into the 5216 around 1972.5206-6010 · 5206-6050 |
| 5619 | automatic | 25 | 1969–1978~ | Lord Matic Special | Higher-grade 25-jewel day-date variant used in Lord Matic Special.5619-7000 · 5619-7010 |
| 6119 | automatic | 17 | 1969–1979 | 5 / Sports | — |
| 6138 | automatic | 21 | 1969–1979 | Chronograph | Larger column-wheel-era automatic chronograph. |
| 6139 | automatic | 17 | 1969–1979 | Chronograph | 6139 'Pogue' automatic chronograph. |
| 7017 | automatic | 21 | 1969–1980~ | 5 Speedtimer | Single-register Speedtimer automatic chronograph; the 7018 is the date-only sibling.7017-6010 · 7017-8000 · 7018-7000 |
| 5626 | automatic | 23 | 1970–1980~ | Lord Matic Special | — |
| 6155 GS | automatic | 25 | 1970–1977~ | Grand Seiko 61GS hi-beat | Grand Seiko 36000 vph hi-beat automatic with date, part of the 61GS Special era; used on a single reference.6155-8000 |
| 6156 GS | automatic | 25 | 1970–1977~ | Grand Seiko 61GS hi-beat | Grand Seiko hi-beat automatic with day-date; the day-date sibling of the 6155 used on the 61GS Special models.6156-8000 · 6156-8010 |
| 3800 | quartz | 7 | 1971–1982 | Seiko 38 (38xx analog quartz) | Time-only '38QT' member of Seiko's first volume-production analog quartz family (Suwa Cal. 38, 1971). Early 16,384 Hz crystal, later 32 kHz; deadbeat seconds. Window widened to 1982 to avoid false contradiction; family ran through the 1970s into the early 1980s.3800-7000 · 3800-7010 |
| 3802 | quartz | 7 | 1971–1982 | Seiko 38 (38xx analog quartz) | Date-only '38QTC' variant of the Suwa Cal. 38 quartz family, 7 jewels, stepper motor. Mid-range Seiko Quartz models.3802-7000 |
| 3803 | quartz | 7 | 1971–1982 | Seiko 38 (38xx analog quartz) | Day/date '38QTW' analog quartz, early 16,384 Hz crystal, later 32 kHz; mid-range Seiko Quartz models. Window widened to 1982.3803-7000 · 3803-7010 · 3803-7060 |
| 3819 | quartz | 7 | 1971–1982~ | Seiko 38 (38xx analog quartz) | '38DQC' Duo-Time GMT with date and a second time-zone hand within the Cal. 38 quartz family. Rated ~10 sec/month. |
| 3820 | quartz | 7 | 1971–1982 | Seiko 38 (38xx analog quartz) | Time-only '38SQ' higher-grade member of Seiko's first volume-production quartz family.3820-6000 |
| 3823 | quartz | 7 | 1971–1982 | Seiko 38 (38xx analog quartz) | Day/date '38SQW' high-grade quartz; VFA examples adjusted to ~5 sec/month over temperature and 6 positions (5 jewels in VFA spec).3823-7000 · 3823-7001 |
| 3870 | quartz | 7 | 1971–1982~ | Seiko 38 (38xx analog quartz) | Rare time-only '38RW' high-torque movement used in Seiko's first quartz railway pocket watch (model QYE010, 3870-0010), produced ~1976 in very small numbers, never catalogued. Rated ~10 sec/month. Window kept wide (1971-1982) to safely contain the ~1976 production without false contradiction.3870-0010 |
| 5216 | automatic | 23 | 1971–1979 | Lord Matic | Day-date Lord Matic / LM Special hi-beat 28800 bph automatic, 23 or 25 jewels, Daini-built; the most common LM caliber, successor to the 5206 with a simplified (non-instant) calendar.5216-7020 · 5216-6040 · 5216-8020 |
| 5245 | automatic | 25 | 1971–1977~ | King Seiko | Hi-beat 28800 bph King Seiko automatic of the Vanac era, 25 jewels, Daini-built; date sibling within the 52xx KS Vanac range.5245-6000 · 5245-6010 |
| 5246 | automatic | 25 | 1971–1977~ | King Seiko | Hi-beat 28800 bph day-date King Seiko / KS Vanac chronometer-grade automatic, 25 jewels, Daini-built, with crown quickset day/date and bilingual day wheel.5246-6000 · 5246-6010 · 5246-6051 |
| 5256 | automatic | 25 | 1971–1977~ | King Seiko | Hi-beat 28800 bph day-date King Seiko / KS Vanac chronometer-grade automatic, 25 jewels, Daini-built; top of the 52xx KS range.5256-6000 · 5256-8000 |
| 7016 | automatic | 21 | 1971–1979~ | Chronograph | — |
| 7019 | automatic | 17 | 1972–1982~ | 5 | — |
| 3882 | quartz | 7 | 1973–1983~ | Seiko 38 (38xx analog quartz) | High-end date-only 'Superior'/'DFA' variant accurate to ~1 sec/month, Seiko's top quartz rating of the era; thermocompensated, early 16 kHz crystal later 32 kHz. Window widened to 1983. |
| 3883 | quartz | 7 | 1973–1983 | Seiko 38 (38xx analog quartz) | High-end day/date 'Superior'/'DFA' caliber; first analog thermo-compensated quartz movement, ~1 sec/month. Superior line launched 1974 priced 220,000 yen. Window widened to 1983.3883-7000 |
| 4205 long run | automatic | 17 | 1973–1992~ | Ladies Automatic (42-series) | Ladies-size 42-series automatic day/date; 17 jewels (lacks the additional bracket jewels of the 4207).4205-0XXX |
| 4207 long run | automatic | 21 | 1973–1992~ | Ladies Automatic (42-series) | Ladies-size 42-series automatic day/date, 21 jewels, 21600 bph, roughly 24h power reserve.4207-0XXX |
| 3862 | quartz | 7 | 1974–1985~ | Seiko 38 (38xx analog quartz) | Cost-reduced 'QR' line date-only variant of Cal. 38; appeared in the mid-1970s and continued into the 1980s. Window widened to 1985. |
| 3863 | quartz | 7 | 1974–1985~ | Seiko 38 (38xx analog quartz) | Cost-reduced 'QR' line day/date variant of Cal. 38; appeared in the mid-1970s and ran into the 1980s. Window widened to 1985. |
| 4822 | quartz | 7 | 1974–1982 | King Quartz | Day-date King Quartz analog quartz, 7 jewels; A variant then B variant from June 1977 with smaller battery. Second hand jumps to nearest even index when crown is pulled.4822-8000 · 4822-8009 · 4822-8010 |
| 4823 | quartz | 7 | 1974–1982 | King Quartz | Day-date King Quartz analog quartz, 7 jewels; same base as 4822 with added day. B variant from June 1977 used smaller battery.4823-8120 · 4823-8000 · 4823-8130 |
| 4842 | quartz | 8 | 1974–1982~ | Grand Quartz | Date-only Grand Quartz analog quartz; A variant replaced by B from June 1977.QNJ020 · QNJ604 |
| 4843 | quartz | 8 | 1974–1982 | Grand Quartz | Day-date Grand Quartz analog quartz, Seiko's first watch to carry the Grand Quartz name; ~5 s/mo with battery-life indicator. B variant from June 1977.4843-8000 |
| 0634 | digital quartz | 0 | 1975–1982~ | notable vintage digital / LCD | World's first multifunction digital quartz chronograph (1975), LCD, 1/10s and lap timing. Made by Suwa Seikosha.0634-5009 · 0634-5019 · 0634-5001 |
| 4821 | quartz | 7 | 1975–1982~ | King Quartz | Time-only analog quartz King Quartz, Suwa-made, 7 jewels, ~10-15 sec/month accuracy; second hand jumps to next 10-second marker when hacked.4821-8000 |
| 0674 | digital quartz | 0 | 1976–1982~ | notable vintage digital / LCD | LCD quartz used in the 0674-5009 'Quartz LC' worn by James Bond in The Spy Who Loved Me (1977).0674-5009 · 0674-5000 |
| 4883 | quartz | 8 | 1976–1982 | Superior | Seiko Superior analog quartz launched 1976 at +/-1 sec/month (replaced the 3883), with end-of-life battery indicator; among the highest-precision quartz of its era. B variant from June 1977 with longer battery life.4883-8000 · 4883-8100 |
| 6306 | automatic | 17 | 1976–1982 | Diver | JDM-only 150m diver with bilingual kanji/English day-date and hacking + hand-winding; predecessor to the 6309 Turtle.6306-7000 · 6306-7001 |
| 6309 | automatic | 17 | 1976–1988 | Diver | 6309-7040 / 7290 'Turtle' diver. |
| 6319 long run | automatic | 21 | 1976–1990~ | Seiko 5 | 21-jewel bilingual day-date Seiko 5 movement in the 63xx series; non-diver dress/sports models, sibling to the 6306/6309 architecture (the 6309 base is 17 jewels).6319-5040 · 6319-7000 |
| 7545 | quartz | 4 | 1977–1988 | 75xx quartz divers & sports | Date-only quartz dress/sports version of the 75-series, one fewer jewel than the day-date 7548. |
| 7546 | quartz | 5 | 1977–1988 | 75xx quartz divers & sports | Day-date SQ sports/dress quartz sharing the 75-series base; interchangeable parts with the diver calibers, slightly lower torque than the 7548.7546-8450 · 7546-6040 |
| 7548 | quartz | 5 | 1977–1988 | 75xx quartz divers & sports | Seiko's first core analog-quartz diver, 150m, day-date; quartz counterpart to the 6309 Turtle case, sharing many parts. SQ-marked for export.7548-7000 · 7548-700B · 7548-700F |
| 7549 | quartz | 5 | 1977–1988 | 75xx quartz divers & sports | Powers the 600m titanium 'Golden Tuna' professional saturation diver; highly collectible.7549-7009 · 7549-7000 · 7549-7010 |
| 7550 | quartz | 5 | 1977–1989~ | 75xx quartz divers & sports | Analog 75-series quartz of the late 1970s/1980s; interchangeable with the diver calibers for service.7550-0010 |
| 7559 | quartz | 4 | 1977–1989~ | 75xx quartz divers & sports | Day-date 75-series analog quartz (4-jewel, 3-hand); the 7559-5010 was an early backlit analog. Interchangeable with the 7549 for service/repair.7559-5000 · 7559-5010 |
| 7800 long run | quartz | — | 1977–1995~ | 78xx analog quartz dress | Late-1970s analog quartz three-hand dress base caliber of the 78xx family; SR927SW battery platform. |
| 7810 long run | quartz | 5 | 1977–1995~ | 78xx analog quartz dress | Analog quartz dress movement built from roughly 1977 into the 1990s.7810-5029 · 7810-5079 · 7810-8009 |
| 7812 long run | quartz | — | 1977–1995~ | 78xx analog quartz dress | Late-1970s analog quartz dress movement, used in the 7812-5029 SQ-style dress watch; SR927SW battery.7812-5029 |
| 7813 long run | quartz | — | 1977–1995~ | 78xx analog quartz dress | Analog quartz day/date dress movement (English/Spanish day options), found in Seiko SQ dress watches of the late 1970s-1980s; 7813-8009 dates to 1977.7813-5029 · 7813-8009 · 7813-8019 |
| 7820 long run | quartz | — | 1977–1992~ | 78xx analog quartz dress | High-grade analog quartz dress movement in the 78xx series; SR927SW battery platform shared with 7800/7810/7813/7830/7832. |
| 7830 long run | quartz | — | 1977–1992~ | 78xx analog quartz dress | Analog quartz dress movement in the 78xx series; production from roughly 1977. |
| 7832 long run | quartz | — | 1977–1992~ | 78xx analog quartz dress | Analog quartz dress movement in the 78xx series; SR927SW battery platform. |
| 7853 long run | quartz | — | 1977–1990~ | 78xx Lord Quartz analog quartz dress | Lord Quartz analog quartz day/date dress movement (the genuine Lord Quartz caliber of the family, +/-10 sec/month), used in late-1970s/1980s Seiko Lord Quartz watches positioned below King/Grand Quartz.7853-5030 · 7853-7000 · 7853-7010 |
| 2620 long run | quartz | 2 | 1978–1995~ | 2xxx analog quartz | Three-hand analog quartz; 2620A (c.1978-1988) and 2620B (c.1980-1990) variants. Shares coil and circuit block with the 2625; fitted to Acie, Chariot and Credor. |
| 5930 long run | quartz | 6 | 1978–1995~ | 59xx high-grade analog quartz | High-grade analog quartz fitted to Dolce, Credor, Lassale and Chariot; 22.0mm, 32,768 Hz, 6 jewels.5930-5199 · 5930-5250 · 5930-5360 |
| 5932 long run | quartz | 6 | 1978–1995~ | 59xx high-grade analog quartz | Date-only sibling of the 5931; fitted to Credor, Lassale, Seagull, Chariot and Silverwave; 6 jewels, battery-life indicator.5932-5040 · 5932-5232 |
| 5933 long run | quartz | 6 | 1978–1995~ | 59xx high-grade analog quartz | Day-and-date analog quartz; same as 5932 but with added day display; fitted to Silverwave and Seagull; 22.0mm, 6 jewels, battery-life indicator. |
| 5939 long run | quartz | 6 | 1978–1995~ | 59xx high-grade analog quartz | Member of the early-1980s 593x high-grade analog quartz family; confirmed via caliber-parts databases (5939A spares) and references 5939-5019 and 5939-5039; fitted to Lassale dress watches.5939-5019 · 5939-5039 |
| M354 | digital quartz | 0 | 1978–1985~ | notable vintage digital / LCD | LCD Memory-Bank Calendar quartz; the M354-5019 (SFX003) is the Bond watch from Moonraker (1979), not The Spy Who Loved Me.M354-5019 · M354-5010 |
| 2625 long run | quartz | 2 | 1979–1995~ | 2xxx analog quartz | Analog quartz that adds a sweep seconds hand and date to the shared 2620/2625 base; 2625A produced c.1979-1989. |
| 2628 long run | quartz | 2 | 1980–1995~ | 2xxx analog quartz | Common 1980s analog quartz of the 26xx family, sharing parts with 2620/2625; fitted to Silverwave, Chariot and Dolce. |
| 6349 | automatic | 23 | 1980–1992~ | Diver | 23-jewel date-only (no day) sibling of the 6306/6309, sharing the oscillating weight and dial-holding ring; used in some JDM divers and date-only sports models.6349-7010 |
| 6431 long run | quartz | 7 | 1980–1996~ | 64xx | High-jewel slim analog quartz for dress watches such as Chariot and Silverwave; no calendar.6431-5010 · 6431-5139 |
| 6432 long run | quartz | 7 | 1980–1996~ | 64xx | Slim analog quartz, same as 6431 but with date display (no day). |
| 6433 long run | quartz | 7 | 1980–1996~ | 64xx | Slim analog quartz in the 64xx family with day-date calendar. |
| 7430 long run | quartz | 2 | 1980–1998~ | 743x analog quartz dress | Analog quartz dress movement, two-hand (no second hand), uses SR721SW battery. On Seiko service datasheet alongside 7431A/7439A. |
| 7431 long run | quartz | 2 | 1980–1998~ | 743x analog quartz dress | Analog quartz dress movement in the 743x series, shares the SR721SW battery platform; documented on the 7430A/7431A/7439A service datasheet. |
| 7433 long run | quartz | 2 | 1980–1998~ | 743x analog quartz dress | Analog quartz day/date movement used in the Seiko Chronos dress line; dated examples include a 1984 square-case 7433-5040, so the window spans the mid-1980s.7433-5010 · 7433-6000 · 7433-7000 |
| 7439 long run | quartz | 2 | 1980–1998~ | 743x analog quartz dress | Analog quartz dress movement, documented alongside 7430A/7431A on the Seiko service datasheet. |
| 5931 | quartz | 7 | 1981–1990~ | Analog quartz (Dolce / Credor) | High-grade analog quartz with Adaptive Drive Control; Dolce/Credor/Chario dress watches, early-to-mid 1980s. Tight early-’80s window (matches WatchSleuth) — overrides the wider auto-compiled range. |
| A829 | digital quartz | 0 | 1981–1990~ | notable vintage digital / LCD | LCD World Time quartz with rotary mode bezel; the A829-6029 'Astronaut' was flight-qualified and worn on Space Shuttle missions.A829-6019 · A829-6029 |
| A904 | digital quartz | 0 | 1981–1990~ | notable vintage digital / LCD | LCD alarm-chronograph quartz from the early-to-mid 1980s, used in the Digital Sports 100 line.A904-5009 · A904-5199 |
| 2A22 long run | quartz | 2 | 1982–2000~ | 2xxx analog quartz | Compact analog quartz (date) from the 2A2x series; production from c.1983, used in small divers and dress models. |
| 2A23 long run | quartz | 2 | 1982–2000~ | 2xxx analog quartz | Common 2A2x-series analog quartz, day/date sibling of the 2A22; production from c.1983-1984. |
| 2C20 long run | quartz | 2 | 1982–2005~ | 2xxx analog quartz | Two-hand (no seconds) analog quartz; Seiko service datasheet covers 2C20A/2C21A together. |
| 2C21 long run | quartz | 2 | 1982–2005~ | 2xxx analog quartz | Three-hand analog quartz adding a seconds hand to the 2C20 base; shares the 2C20A/2C21A service datasheet. |
| 6532 long run | quartz | 5 | 1982–1999 | 65xx | Analog quartz with date, 32768 Hz; used in Tank Quartz dress models.6532-5230 · 6532-5310 |
| 6533 long run | quartz | 5 | 1982–1999~ | 65xx | Analog quartz, same base as 6532 but with day-date calendar. |
| 7730 long run | quartz | 0 | 1982–1998~ | 77xx analog quartz (dress) | Thin two-hand analog quartz for Seiko Dolce dress watches; not a chronograph despite the family scope label. End year widened to match the longer-running 7731/7732 siblings.7730-5000 |
| 7731 long run | quartz | 0 | 1982–1998~ | 77xx analog quartz (dress) | Center-seconds analog quartz used in Seiko Dolce; sibling of the two-hand 7730, not a chronograph.7731-5000 · 7731-5030 · 7731-5200 |
| 7732 long run | quartz | 3 | 1982–1998~ | 77xx analog quartz (dress) | Daini-built date-only analog quartz in the 7730 series (Dolce); a dress movement, not a chronograph. Jewels corroborated at 3. |
| 7A28 | quartz | 15 | 1982–1994 | 7A analog quartz chronograph | World's first analog quartz chronograph; early units off the line late 1982, official release 1983. 7A28-7000 is the Giugiaro 'Ripley' worn in Aliens. Fully metal, serviceable, no plastic in the gear train.7A28-7000 · 7A28-7010 · 7A28-7039 |
| A828 | digital quartz | 0 | 1982–1990~ | notable vintage digital / LCD | LCD multi-function quartz; the A828 case family underlies the Giugiaro-designed 'Speed Master' digital chronographs from the mid-1980s.A828-4000 |
| A914 | digital quartz | 0 | 1982–1991~ | notable vintage digital / LCD | LCD alarm-chronograph quartz used in several 1980s sport digitals.A914-5A09 · A914-5A08 |
| 6F21 | quartz | 1 | 1983–1996~ | 6F | Analog quartz multi-complication movement in the 6F moonphase/tide family. |
| 6F22 | quartz | 1 | 1983–1997~ | 6F | Analog quartz moonphase/multi-complication movement with date, used in dress and Sports models.6F22-7000 · 6F22-8000 |
| 7770 long run | quartz | 0 | 1983–1998~ | 77xx analog quartz (Credor) | Two-hand (no seconds) thin analog quartz used in Credor luxury dress watches; not a chronograph.7770-5070 |
| 7771 long run | quartz | 6 | 1983–1998~ | 77xx analog quartz (Credor) | Center-seconds Credor variant based on the 7770; high-grade analog quartz dress movement, not a chronograph. Credor data corroborates 6 jewels.7771-5010 · 7771-5030 |
| 7772 long run | quartz | 6 | 1983–1998~ | 77xx analog quartz (Credor) | Credor date-equipped analog quartz variant in the 7770 series; a high-grade dress movement, not a chronograph. |
| 7A34 long run | quartz | 15 | 1983–1995~ | 7A analog quartz chronograph | Like the 7A38 but without the day wheel; date at 12 o'clock. Less common variant. |
| 7A38 long run | quartz | 15 | 1983–1995 | 7A analog quartz chronograph | Most common movement in the 7A family; three sub-registers with day and date. All 7A movements rated ~10 sec/month.7A38-7020 · 7A38-7000 · 7A38-702A |
| A939 | digital quartz | 0 | 1983–1992~ | notable vintage digital / LCD | LCD alarm-chronograph quartz from the mid-1980s digital range.A939-5009 |
| M516 | digital quartz | 0 | 1983–1989~ | notable vintage digital / LCD | LCD 'Voice Note' (1983), world's first watch with audio record/playback; carbon-fibre case, later seen in Ghostbusters.M516-4009 |
| 2E20 long run | quartz | 1 | 1984–2010~ | 2xxx analog quartz | Very small two-hand analog quartz (8.5 x 15.5 mm, 2.20 mm thick, 1 jewel) for ladies/dress watches; battery 379/SR521SW. |
| 6F24 long run | quartz | 1 | 1984–1999~ | 6F | Analog quartz tide/moonphase movement; used in Tide Master and Sports 150m models.6F24-7010 · 6F24-7019 · 6F24-8000 |
| 7740 | quartz | 3 | 1984–1998~ | 77xx analog quartz (dress) | Daini-built two-hand thin analog quartz for Dolce; hacking seconds, no chronograph despite the family label. End year widened to match the 7741/7742/7749 siblings.7740-5000 |
| 7741 long run | quartz | 3 | 1984–1998~ | 77xx analog quartz (dress) | Adds a center seconds hand to the 7740; analog quartz Dolce dress movement, not a chronograph.7741-5000 · 7741-6030 |
| 7742 long run | quartz | 3 | 1984–1998~ | 77xx analog quartz (dress) | Date-equipped analog quartz in the 7740 series (Dolce/Chronos); a dress movement, not a chronograph. |
| 7749 long run | quartz | 3 | 1984–1998~ | 77xx analog quartz (dress) | Daini-built analog quartz dress caliber in the 7740 series; essentially the 7742 without a seconds hand. Not a chronograph. Jewels corrected from 0 to 3. |
| 7A48 long run | quartz | 15 | 1984–1995 | 7A analog quartz chronograph | Adds a moon-phase subdial and date to the chronograph configuration; used in Sports 100 models.7A48-7000 |
| 7A54 long run | quartz | 15 | 1984–1995~ | 7A analog quartz chronograph | Special, more decorated 7A-series moon-phase chronograph movement made for the Seiko-owned Lassale line (alongside the 7A75); similar to the 7A48. Known case model 7A54-7009 (pocket watch).7A54-7009 |
| 7C43 long run | quartz | 0 | 1985–present~ | Diver | High-grade sports quartz powering the 7C43-7010 1000m 'Quartz Tuna' professional diver; the Quartz Tuna lineage kept this caliber in long production.7C43-7010 Quartz Tuna 1000m |
| 7C46 long run | quartz | 0 | 1986–present~ | Diver | Robust sports quartz used in 200m/300m Seiko divers, sibling to the 7C43 Tuna caliber. |
| 7N43 long run | quartz | 0 | 1986–present | 3-hand quartz | Ubiquitous quartz movement, decades-long run — very weak narrowing power. |
| 5M22 long run | kinetic | 6 | 1988–2005~ | Kinetic (AGS) | Early AGS (Automatic Generating System) auto-quartz, three-hand with date; used in SUS/dress models before the Kinetic rebrand of 1993. AGS launched 1988, so window widened back to 1988.5M22-6C30 · 5M22-7A60 |
| 5M42 long run | kinetic | 6 | 1988–2005~ | Kinetic (AGS) | Workhorse first-generation AGS/Kinetic, three-hand date; very common across the 1990s Kinetic line. AGS launched 1988, so window widened back to 1988.5M42-0E30 · 5M42-0A89 |
| 5M43 long run | kinetic | 6 | 1988–2005~ | Kinetic (AGS) | Day-date companion to the 5M42 in the early AGS/Kinetic generation. Covered alongside 3M22/5M42 in Seiko's shared instruction manual.5M43-0C50 · 5M43-0040 |
| 6M13 | quartz | 1 | 1988–2001~ | 6M | Multi-hand analog quartz with perpetual calendar (1400-2499), alarm and calendar-search functions. |
| 7002 | automatic | 17 | 1988–1996~ | Diver | 7002-700x diver; predecessor to the 7S26 SKX. |
| 7009 | automatic | 17 | 1988–1999~ | 5 | Overlaps 7002 era — caliber alone may not pin the decade. |
| 7N82 long run | quartz | 0 | 1988–present~ | Seiko Quartz | Day-date economy quartz closely related to 7N43, fitted across Seiko 5 quartz and budget lines. |
| 6M15 | quartz | 1 | 1989–2003~ | 6M | Multi-hand analog quartz alarm-chronograph with world time. |
| 5M23 long run | kinetic | 6 | 1990–2005~ | Kinetic (AGS) | AGS-era auto-quartz diver-style caliber; AGS-branded predecessor to later 5M dive Kinetics. Window widened for safe intersection.5M23-7A40 |
| 6M25 | quartz | 1 | 1990–2004~ | 6M | Multi-hand analog quartz with calendar complications, used in Lassale dress models. |
| 7T32 long run | quartz | 0 | 1990–2010~ | Quartz Chronograph | Alarm chronograph quartz from the 7T series, fitted to 1990s and 2000s Seiko sports chronographs. |
| 8F32 long run | quartz | 0 | 1990–present | 8F perpetual-calendar quartz | High-accuracy (+/-20 sec/year) perpetual-calendar analog quartz with day and date and a ~10-year lithium battery. Calendar auto-adjusts through leap years to 2100. Confirmed by Seiko service parts catalogue 4F32A/8F32A/33A/35A. Documented examples appear from 1990.8F32-0049 · 8F32-0079 · 8F32-0210 |
| 8F33 long run | quartz | 0 | 1990–present | 8F perpetual-calendar quartz | Perpetual-calendar high-accuracy quartz day-date variant in the 8F family; ~10-year battery, +/-20 sec/year. Shares the 4F32A/8F32A/33A/35A service catalogue with 8F32 and 8F35. Used in Dolce and dress models.8F33-0030 |
| 8F35 long run | quartz | 0 | 1990–present | 8F perpetual-calendar quartz | High-torque perpetual-calendar high-accuracy quartz for 200m divers; +/-20 sec/year, ~8-10 year battery. Used in the Prospex SBCM023 / 8F35-0030 quartz diver. Corrected: this is the diver high-torque caliber, not a Sportura/Premier movement.8F35-0030 · SBCM023 |
| 5M45 | kinetic | 6 | 1993–2005~ | Kinetic (AGS) | AGS/Kinetic caliber used in titanium Landmaster, Flightmaster (GMT) and Scubamaster models (e.g. SBCW001, SBCW005). Real refs corrected from the draft's placeholder 5M45-5A00.5M45-6A01 · 5M45-6A50 |
| 8F56 long run | quartz | 0 | 1993–present | 8F perpetual-calendar quartz | Perpetual-calendar high-accuracy analog quartz with GMT / second-time-zone hand; +/-20 sec/year, ~10-year battery. Found in the titanium Perpetual GMT 8F56-0080 and Alpinist/Premier/Landtrek models. Shares the 4F56A/8F56A/8F58A service catalogue with 8F58.8F56-0080 · 8F56-00F0 |
| 8F58 long run | quartz | 0 | 1993–present | 8F perpetual-calendar quartz | Perpetual-calendar high-accuracy quartz with GMT / dual-time complication; sibling of the 8F56, grouped with it in the Seiko 4F56A/8F56A/8F58A parts catalogue. Confirmed real watch model 8F58-0020. ~10-year battery, +/-20 sec/year.8F58-0020 |
| 9F61 GSlong run | quartz | 9 | 1993–present | Grand Seiko 9F | Three-hand time-only (no date) high-accuracy 9F quartz, +/-10s per year.SBGT · SBGX time-only |
| 9F62 GSlong run | quartz | 9 | 1993–present | Grand Seiko 9F | Most common 9F: three-hand with date, instant date change, +/-10s per year; backbone of SBGX line.SBGX series · SBGX061 'Snowflake quartz' · SBGX259 |
| 9F82 GSlong run | quartz | 9 | 1993–present~ | Grand Seiko 9F | Three-hand with date 9F variant; +/-10s per year high-accuracy quartz.SBGT series |
| 9F83 GSlong run | quartz | 9 | 1993–present | Grand Seiko 9F | Three-hand with date 9F quartz, +/-10s per year; one of the original 1993 9F calibers.SBGV series |
| 3M22 | kinetic | 6 | 1994–2005~ | Kinetic (AGS) | Slim/small AGS-Kinetic with date and a press-button power-reserve indicator; used in ladies' and dress models (e.g. Age of Discovery) in the mid-to-late 1990s. Covered by Seiko's official 'Cal. 3M22, 5M42, 5M43' manual. Window widened.3M22-0A10 · 3M22-0A60 · 3M22-0A90 |
| 7S25 long run | automatic | 21 | 1995–2021~ | Seiko 5 | Date-only sibling of the day-date 7S26, found in some Seiko 5 and entry models. |
| 7S35 long run | automatic | 23 | 1995–2021~ | Seiko 5 | 23-jewel date-only counterpart to 7S36 in the 7S family. |
| 7S26 long run | automatic | 21 | 1996–2019 | 5 / Diver | SKX007/009 diver workhorse; very long run, weak decade-narrowing on its own. |
| 7S36 long run | automatic | 23 | 1996–2019 | 5 Sports | — |
| 7S55 long run | automatic | 23 | 1996–2012~ | Seiko 5 | Higher-grade 7S-series auto used in select Seiko 5 and SUS/Spirit models, often with open-heart dials. |
| 7T62 long run | quartz | 7 | 1997–present | Alarm chronograph (quartz) | — |
| 5M62 | kinetic | 11 | 1998–present~ | Kinetic | Kinetic (auto-quartz hybrid). |
| 8L35 | automatic | 26 | 1998–present | Prospex (MM300) | Undecorated sibling of the Grand Seiko 9S; powers Marinemaster 300. |
| 9S55 GS | automatic | 26 | 1998–2010 | Grand Seiko 9S | Grand Seiko — uses GS dating conventions, not the standard serial scheme. |
| 9S56 GSlong run | automatic | 26 | 1998–2014~ | Grand Seiko 9S | 9S5x-family automatic (three-hand, no-date), 28800 vph; sibling of the 9S55. |
| 3M62 long run | kinetic | 6 | 1999–2016~ | Kinetic | Compact second-gen Kinetic (3M series) with date; documented alongside 5M62/5M63 in shared Kinetic instruction booklets. Window widened for safe intersection. |
| 5M54 long run | kinetic | 6 | 1999–2018~ | Kinetic | Kinetic in the 5M62/5M63 family adding a power-reserve indicator (second hand sweeps to show reserve when crown pulled). Confirmed by Seiko's official 'Cal. 5M54, 5M62 & 5M63' manual; used in Arctura-style models. Window widened for safe intersection. |
| 5M65 long run | kinetic | 6 | 2002–present~ | Kinetic | Kinetic with power-reserve indicator (press-button check); grouped with 5M62/5M63/5M65 generation. Widely used from the 2000s onward, so endYear left open. |
| 7T92 long run | quartz | 7 | 2002–present | Chronograph (quartz) | Common quartz alarm-chronograph; long run, weak narrowing. |
| 9R65 GS | spring drive | 30 | 2004–present | Grand Seiko 9R Spring Drive | — |
| 7R88 long run | spring drive | 48 | 2005–present~ | Credor Spring Drive | Credor manual-wind Spring Drive with power-reserve indicator, ~48h reserve.Credor Spring Drive Power Reserve · GBLT997 |
| 9R66 GSlong run | spring drive | 30 | 2005–present | Grand Seiko 9R | GS Spring Drive automatic GMT (date), variant of the 9R6x base, ~72h reserve.SBGE001 GMT · SBGE201 · SBGE253 |
| 6R15 | automatic | 23 | 2006–2019 | SARB / Prospex | SARB033/035 era; ~50h power reserve. |
| 9S64 GSlong run | manual | 24 | 2006–present | Grand Seiko 9S | Hand-wound 9S, 28800 vph, 72h power reserve; powers classic time-only dress models like the SBGW231.SBGW231 · SBGW253 · SBGW260 |
| 9S65 GS | automatic | 35 | 2006–present | Grand Seiko 9S | Grand Seiko 72h automatic — treat serial dating with caution. |
| 9S66 GSlong run | automatic | 35 | 2006–present | Grand Seiko 9S | 72h automatic with day-date, 28800 vph; day-date sibling of the 9S65.SBGR261 |
| 9R86 GSlong run | spring drive | 50 | 2007–present | Grand Seiko 9R | GS Spring Drive chronograph GMT automatic, column-wheel, ~72h reserve.SBGC001 · SBGC013 · SBGC203 |
| 7R14 long run | spring drive | 41 | 2008–present~ | Credor Spring Drive | Hand-wound Spring Drive in the Credor Eichi line, Micro Artist Studio porcelain-dial pieces.Credor Eichi · Credor Eichi II GBLT998 |
| 9R96 GSlong run | spring drive | 50 | 2008–present~ | Grand Seiko 9R | Higher-accuracy chronograph GMT variant of the 9R86, +/-0.5 sec/day rating.SBGC005 · SBGC238 |
| V14J long run | solar | 0 | 2008–present~ | Solar | Solar caliber used in entry and mid-range Seiko Solar three-hand models; shares the MT920 capacitor (~10-month reserve) with V147. |
| V158 long run | solar | 0 | 2008–present~ | Solar | Three-hand solar caliber (improved accuracy and power reserve over V145A) used in dress and casual solar models. Documented in the shared V157A/V158A technical guide. |
| V172 long run | solar | 0 | 2008–present | Prospex Solar Chronograph | Solar chronograph caliber with 1/5-second chrono and 60-minute counter, widely used in Prospex Solar dive chronographs. Start widened to cover platform introduction.SSC series Prospex Solar Chronograph 200m · SSC017 |
| V181 long run | solar | 0 | 2008–present~ | Solar | Solar caliber with multi-function display used in mainstream Seiko Solar watches; uses MT616 capacitor with ~2-month reserve. Listed in the V147/V157/V181/V182/V187 instruction set. |
| V182 long run | solar | 0 | 2008–present~ | Solar | Multi-hand solar caliber, sibling to V181, used in Seiko Solar dress and field models; shares the MT616 capacitor and is documented alongside V181 in Seiko's solar instruction set. |
| 9S85 GSlong run | automatic | 37 | 2009–present | Grand Seiko 9S Hi-Beat | Hi-Beat 36000 automatic, 36000 vph, ~55h reserve; launched 2009 reviving the high-beat line.SBGH001 · SBGH005 · SBGH245 |
| 4R35 | automatic | 23 | 2010–present~ | 5 / Prospex | Hacking + hand-winding; successor lineage to 7S26. |
| 4R36 long run | automatic | 24 | 2010–present~ | 5 Sports / Prospex | Day-date workhorse in modern Seiko 5 Sports & Prospex. |
| 6R20 | automatic | 29 | 2010–2019~ | Seiko Presage | Premium ~45h column-wheel-era movement with date and power-reserve indicator, used in upper Presage models.SARW Presage · SARG Presage |
| V157 | solar | 0 | 2010–present~ | Prospex Solar Diver | — |
| V175 long run | solar | 0 | 2010–present~ | Prospex Solar Chronograph | Solar chronograph caliber, sibling to V172, with 1/5-second stopwatch, 60-minute counter, date and 24-hour hand; ~6-month reserve. Used in Prospex and Speedtimer-style solar chronographs.SSC series · SSC017 |
| 6R27 | automatic | 29 | 2011–2021~ | Seiko Presage | Premium movement with power reserve and small date, found in mid-to-upper Presage enamel/Urushi models.SARW Presage · SARD Presage |
| 9S68 GSlong run | automatic | 35 | 2011–present | Grand Seiko 9S | 72h automatic with date, 28800 vph; widely used in current Heritage and dress lines.SBGM221 |
| 6R24 | automatic | 29 | 2012–2021~ | Seiko Presage | Power-reserve plus date complication movement with ~45h reserve used across premium Presage dress pieces.SARW Presage |
| NH35 | automatic | 24 | 2012–present | 5 (SII export) | Seiko-Epson (SII) export twin of the 4R35. |
| NH36 | automatic | 24 | 2012–present | 5 (SII export) | Export twin of the 4R36. |
| V147 | solar | 0 | 2012–present~ | Solar chronograph | — |
| 4R38 long run | automatic | 24 | 2014–present~ | Presage | Date-only / open-heart 4R variant without day, used in Presage and some open-heart automatics. |
| 8L55 | automatic | 37 | 2014–present~ | Prospex Hi-Beat | Hi-beat 36,000 vph for premium Prospex divers. |
| 9S86 GS | automatic | 37 | 2014–present | Grand Seiko 9S Hi-Beat | Hi-Beat 36000 GMT automatic, 36000 vph, dual-time with independent hour hand.SBGJ201 · SBGJ235 |
| NH38 long run | automatic | 24 | 2014–present~ | Seiko Instruments (SII) | Open-heart / no-date export twin of the 4R38, used in skeleton-dial microbrand pieces. |
| 4R37 | automatic | 24 | 2016–present~ | Presage | Power-reserve-complication auto in the 4R family, used in select Presage models. |
| 4R57 | automatic | 25 | 2016–present~ | Presage | Power-reserve indicator auto in the 4R range, found in Presage power-reserve models. |
| 9R01 GS | spring drive | 39 | 2016–present | Grand Seiko 9R | Manual-wind Spring Drive with 8-day (192h) reserve via three barrels; flagship high-end caliber.SBGD001 · SBGD201 Manchurian · SBGZ001 |
| 9S67 GS | automatic | 35 | 2016–present~ | Grand Seiko 9S | 72h automatic with date, 28800 vph; used in select Elegance/dress references. |
| 9F86 GS | quartz | 9 | 2017–present | Grand Seiko 9F | First 9F quartz GMT caliber with independently adjustable hour hand, +/-10s per year; debuted on SBGN001/SBGN003.SBGN series · SBGN001 · SBGN003 |
| 9R02 GS | spring drive | 39 | 2018–present | Grand Seiko 9R | Manual-wind Spring Drive, ~84h reserve with torque-return system, Micro Artist Studio finished.SBGZ001 Snowflake-engraved · SBGZ003 |
| 6R31 long run | automatic | 24 | 2019–present~ | Seiko Presage / Prospex | Time-and-no-date variant in the modern 70h-reserve 6R3x generation, used in clean-dial Presage/Prospex pieces. |
| 6R35 | automatic | 24 | 2019–present | Prospex / Presage | 70h power-reserve successor to the 6R15. |
| 9R15 GS | spring drive | 30 | 2019–present | Grand Seiko 9R | Higher-accuracy +/-0.5 sec/day rated upgrade of the 9R65 automatic, ~72h reserve.SBGA413 Shunbun · SBGA211 (later) |
| 9R16 GS | spring drive | 30 | 2019–present~ | Grand Seiko 9R | Higher-accuracy GMT counterpart to the 9R15, replacing 9R66 in newer GMT references.SBGE275 · SBGE277 |
| 9R31 GS | spring drive | 30 | 2019–present | Grand Seiko 9R | Manual-wind Spring Drive, single-barrel ~72h reserve, used in slim Elegance dress models.SBGY002 · SBGY003 Omiwatari · SBGY007 |
| 6R51 long run | automatic | 29 | 2020–present~ | Seiko Presage | Modern open-heart power-reserve movement with ~70h reserve for upper Presage models.Presage Sharp Edged / Craftsmanship open-heart |
| 6R55 long run | automatic | 29 | 2020–present~ | Seiko Presage | Power-reserve indicator movement with ~72h reserve used in the current upper Presage lineup.Presage Craftsmanship power-reserve |
| 9F85 GS | quartz | 9 | 2020–present | Grand Seiko 9F | Refined-generation three-hand date 9F quartz introduced 2020 (time-only sibling of GMT 9F86), +/-10s per year.SBGP series · SBGP003 44GS Heritage · SBGP009/011/013 |
| 9RA2 GS | spring drive | 38 | 2020–present | Grand Seiko 9R | 5-day reserve automatic Spring Drive GMT, +/-0.5 sec/day, modern Evolution 9 series caliber.SLGB001 Evolution 9 GMT · SLGA021 |
| 9RA5 GS | spring drive | 38 | 2020–present | Grand Seiko 9R | 5-day (120h) reserve automatic Spring Drive, +/-0.5 sec/day, thinner dual-barrel architecture.SLGA001 60th Anniversary · SLGA007 White Birch · SLGA009 |
| 9SA5 GS | automatic | 47 | 2020–present | Grand Seiko 9SA | Hi-Beat 36000 with dual-impulse escapement and free-sprung balance, 80h reserve; debuted 2020 in SLGH002 and White Birch SLGH005.SLGH002 · SLGH005 |
| 6R64 long run | automatic | 29 | 2021–present~ | Seiko Presage / Prospex | Modern movement with power-reserve complication in the long-reserve 6R6x family.Presage / Prospex power-reserve |
| NH34 | automatic | 24 | 2022–present~ | Seiko Instruments (SII) | GMT export movement in the NH family with independent 24-hour hand, twin of the 4R34. |
| 9SA4 GS | manual | 39 | 2023–present~ | Grand Seiko 9SA | Manual-wind 9SA-architecture caliber, Hi-Beat 36000 with dual-impulse escapement, used in slim hand-wound models.SLGW002 · SLGW003 |
| 8L45 | automatic | 35 | 2025–present | Prospex Diver (8L) | Newest-generation 8L with ~72h power reserve and rated +10/-5 sec/day accuracy (SPRON alloy). First appeared in the SLA081 60th Anniversary LE (2025) and became the standard movement of the non-limited Marinemaster (HBF001), replacing the 8L35 in modern 1968-heritage divers.SLA081 Marinemaster Professional 600 60th Anniversary · HBF001 Marinemaster 1968 Heritage Diver · HBF002 JAMSTEC |
232 of 232 calibers · ranges are community-sourced approximations · as of 2026