Alpina 181 (Venus 70a)
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Alpina |
| Year | ~ |
Documents
No documents
Notes:
open face calibre
cylinder escapement
An Alpina list contains as Alpina 161 a ladies wrist-watch calibre, based on the Marc Favre 161.
differences not known between 161, 181, 3479
Dimensions
| Width | 40.2 lignes |
|---|---|
| Height | 5.6 mm |
| Stem height | 0.7 mm |
| Hands diameter (H x M x S) | 1.9 x 1.0 x 0.25 mm |
Technical data
| Lift angle | ° |
|---|---|
| Beat rate | 18000 BPH |
| Jewels count | |
| Power reserve | 47 hours |
| Shock protection | |
| Mobile stud carrier | false |
Complications
| Self winding | no |
|---|---|
| Date | false |
| Day | false |
| Hacking | false |
| Chronograph | false |
Mainspring
| GR code | Zf3420 |
|---|---|
| Length | 580 |
| Height | 17.0 |
| Thickness | 0.18 |
| Diameter | 1.9 |