Alpina 409
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Alpina |
| Year | ~ |
Documents
No documents
Notes:
open face calibre
bimetallic screw balance with 4 adjustment screws
Breguet hairspring
differences not known between 409, 413
Dimensions
| Width | 42.95 lignes |
|---|---|
| Height | 5.15 mm |
| Stem height | 0.5 mm |
| Hands diameter (H x M x S) | 1.9 x 1.0 x 0.24 mm |
Technical data
| Lift angle | ° |
|---|---|
| Beat rate | 18000 BPH |
| Jewels count | |
| Power reserve | 38 hours |
| Shock protection | |
| Mobile stud carrier | false |
Complications
| Self winding | no |
|---|---|
| Date | false |
| Day | false |
| Hacking | false |
| Chronograph | false |
Mainspring
| GR code | GR5434 |
|---|---|
| Length | 540 |
| Height | 1.8 |
| Thickness | 0.21 |
| Diameter | 17.0 |