Certina 25-661M
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Certina |
| Year | ~1975 |
Documents
No documents
Notes:
1975-1977
like 25-661, but balance with 3 instead 2 spokes, and bigger plate recess for lever cock
choice between bevelled and plane date disc (cf. 25-651M)
As old and new components were mutually interchangable, they were arbtrarily mixed during the transition periode, and also the signatures were scarcely correct.
Dimensions
| Width | 25.6 lignes |
|---|---|
| Height | 4.3 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 | 46 hours |
| Shock protection | |
| Mobile stud carrier | false |
Complications
| Self winding | no |
|---|---|
| Date | true |
| Date quick set | false |
| Day | false |
| Hacking | false |
| Chronograph | false |
Mainspring
| GR code | |
|---|---|
| Length | |
| Height | 10.0 |
| Thickness | 0.12 |
| Diameter | 1.2 |