Certina 25-651
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Certina |
| Year | ~1960 |
Documents
No documents
Notes:
1960-1975
1960-1968: 7221 chronometers (25-65 and 25-651)
choice between bevelled and plane date disc (cf. photos)
Dimensions
| Width | 25.6 lignes |
|---|---|
| Height | 5.4 mm |
| Stem height | 2.0 mm |
| Hands diameter (H x M x S) | 1.5 x 0.9 x 0.18 mm |
Technical data
| Lift angle | 50° |
|---|---|
| Beat rate | 19800 BPH |
| Jewels count | |
| Power reserve | 44 hours |
| Shock protection | |
| Mobile stud carrier | false |
Complications
| Self winding | rotor |
|---|---|
| Date | true |
| Date quick set | false |
| Day | false |
| Hacking | false |
| Chronograph | false |
Mainspring
| GR code | GR2937-X |
|---|---|
| Length | 340 |
| Height | 1.2 |
| Thickness | 0.105 |
| Diameter | 10.0 |