Seiko 6308A
Mechanical
c. 1976
Self-winding (rotor)
Date
No photos yet
Notes
1976-
ball-bearing rotor
sophisticated excenter self-winding mechanism with just one gear stage (details cf. Seiko 6139B)
no hairspring stud, hairspring clamped directly in terminal
many parts and casing dimensions from equivalent models of the 61XX family
Dimensions
| Width | 27 lignes (60.91 mm) |
|---|---|
| Height | 5.35 mm |
| Stem height | — |
| Hands (H × M × S) | 1.5 × 0.9 × 0.2 mm |
Technical data
| Beat rate | 21,600 vph (3 Hz) |
|---|---|
| Lift angle | 54 ° |
| Power reserve | 47 h |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | Rotor |
|---|---|
| Date | Yes (quick set) |
| Day | No |
| Hacking | No |
| Chronograph | No |
Mainspring
| GR code | — |
|---|---|
| Height | — |
| Thickness | — |
| Length | — |
| Barrel diameter | — |
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Seiko |
| Year | c. 1976 |
| Family | — |
| Clone of | — |
Documents
None
Updated 7 days ago · 0 revisions