Movement referenceLong production run
Seiko caliber 8420
Two-hand thin quartz (20-second hand step), 15.5 x 9.0 x 1.7 mm, SR616SW, used in Credor, Exceline and Lassale. GMT+9 table gives series introduction 1979; JDM table release Sep 1980; in JDM model pages 1981-1987 and in Seiko's caliber table through 1994.
- Type
- quartz
- Jewels
- 6
- Produced
- 1979–1996 (approx.)
- Family
- 84 analog quartz (thin, high grade)
Have a 8420? Find the year it was made.
In the catalogue
0 modelsNo models with the 8420 are in the catalogued sets yet — the extracted catalogues are mostly 1968–1977 Japanese-domestic editions. More catalogues are being read.
Available at Tiny Hour Tales
With the 8420, in the shop now
The shop’s own listing names the 8420 for these watches.
