Caliber lookup
Movement reference
5646
25-jewel day-date automatic, Seiko 5 DX, 21600 bph with quickset day-date.
- Type
- automatic
- Jewels
- 25
- Produced
- 1968–1978 ~
- Family
- Seiko 5
Notable references
5646-70105646-80005646-7000
In the catalogue
0 modelsNo models with the 5646 are in the catalogued sets yet — our extracted catalogues are mostly 1970s Japanese-domestic editions. More catalogues are being digitised.