Seiko 5646A
Mechanical
c. 1970
Self-winding (rotor)
Date
Day
Hacking
No photos yet
Notes
1970-
Diafix combined settings for escape wheel and third wheel
The winding gear is integrated in the movement, instead of attaching it to a manual-wind calibre as usual.
Together with the indirectly driven minute this allows a rugged movement with relatively big balance and low profile.
Dimensions
| Width | 25.6 lignes (57.75 mm) |
|---|---|
| Height | 4.45 mm |
| Stem height | 1.8 mm |
| Hands (H × M × S) | 1.5 × 0.9 × 0.2 mm |
Technical data
| Beat rate | 28,800 vph (4 Hz) |
|---|---|
| Lift angle | 56 ° |
| Power reserve | 46 h |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | Rotor |
|---|---|
| Date | Yes (quick set) |
| Day | Yes (quick set) |
| Hacking | Yes |
| Chronograph | No |
Mainspring
| GR code | — |
|---|---|
| Height | — |
| Thickness | — |
| Length | — |
| Barrel diameter | — |
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Seiko |
| Year | c. 1970 |
| Family | — |
| Clone of | — |
Documents
None
Updated 7 days ago · 0 revisions