Seiko 4005A
Mechanical
c. 1967
Self-winding (rotor)
Date
No photos yet
Notes
1967-
ball-bearing rotor
alarm: hammer on sounding spring
Dimensions
| Width | — |
|---|---|
| Height | 7.1 mm |
| Stem height | — |
| Hands (H × M × S) | 1.5 × 0.9 × 0.2 mm |
Technical data
| Beat rate | 19,800 vph (2.75 Hz) |
|---|---|
| Lift angle | — |
| Power reserve | 42 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 | GR2378-X |
|---|---|
| Height | 0.95 mm |
| Thickness | 0.12 mm |
| Length | 400 mm |
| Barrel diameter | 10.5 mm |
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Seiko |
| Year | c. 1967 |
| Family | — |
| Clone of | — |
Documents
None
Updated 7 days ago · 0 revisions