Citizen 7730
Mechanical
c. 1971
Self-winding (rotor)
Date
Day
No photos yet
Notes
1971-
chronometer
jewel bearings for barrel
differences not known between 7730, 7740
Dimensions
| Width | 28.05 lignes (63.28 mm) |
|---|---|
| Height | 4.8 mm |
| Stem height | 1.15 mm |
| Hands (H × M × S) | 1.52 × 1 × 0.17 mm |
Technical data
| Beat rate | 36,000 vph (5 Hz) |
|---|---|
| Lift angle | 48 ° |
| Power reserve | — |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | Rotor |
|---|---|
| Date | Yes (quick set) |
| Day | Yes |
| Hacking | No |
| Chronograph | No |
Mainspring
| GR code | — |
|---|---|
| Height | — |
| Thickness | — |
| Length | — |
| Barrel diameter | — |
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Citizen |
| Year | c. 1971 |
| Family | — |
| Clone of | — |
Related calibers
Documents
None
Updated 7 days ago · 0 revisions