Family: ETA 27XX
- 2770: false, false
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ETA 2770
Type: Mechanical
Manufacturer: ETA
Year: ~1940
Notes:
Dimensions
| Width | 11.5 lignes |
|---|---|
| Height | 5.3 mm |
| Stem height | 2.0 mm |
| Hands diameter (H x M x S) | 1.5 x 0.9 x 0.25 mm |
Technical data
| Lift angle | ° |
|---|---|
| Beat rate | 18000 BPH |
| Jewels count | 1, 2, 3 |
| Power reserve | 47 hours |
| Shock protection | Incabloc |
| Mobile stud carrier | false |
Complications
| Self winding | rotor |
|---|---|
| Date | false |
| Day | false |
| Hacking | false |
| Chronograph | false |
Mainspring
| GR code | |
|---|---|
| Length | 360 |
| Height | 1.45 |
| Thickness | 0.12 |
| Diameter | 10.5 |