ETA 2890
Mechanical
c. 1975
Self-winding (rotor)
Hacking
No photos yet
Notes
1975-1983
due to low profile often used as base for modules with additional functions
In the base movement a section opposite to the stem was left free (Fig.3), into which the gear of the automatic module extends. So despite the service friendly modular design the total height could be kept low.
Dimensions
| Width | 28 lignes (63.16 mm) |
|---|---|
| Height | 3.6 mm |
| Stem height | 1.1 mm |
| Hands (H × M × S) | 1.5 × 0.9 × 0.25 mm |
Technical data
| Beat rate | 28,800 vph (4 Hz) |
|---|---|
| Lift angle | 53 ° |
| Power reserve | 42 h |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | Rotor |
|---|---|
| Date | No |
| Day | No |
| Hacking | Yes |
| Chronograph | No |
Mainspring
| GR code | — |
|---|---|
| Height | 1.05 mm |
| Thickness | 0.12 mm |
| Length | 430 mm |
| Barrel diameter | — |
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | ETA |
| Year | c. 1975 |
| Family | — |
| Clone of | — |
Documents
None
Updated 7 days ago · 0 revisions