Certina 25-681
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Certina |
| Year | ~1972 |
Documents
No documents
Notes:
1972-1977
ball bearing for minute staff, jewelled barrel arbor (Fig.3)
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 | 49° |
|---|---|
| Beat rate | 28800 BPH |
| Jewels count | |
| Power reserve | 42 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 |