ETA 900
Mechanical
No photos yet
Notes
option: Breguet hairspring, standard flat hairspring
differences not known between 900, 902, 903, 927-929, 938, 941, 968
likely just different bridge designs (cf. Fig.5)
Dimensions
| Width | 23.35 lignes (52.67 mm) |
|---|---|
| Height | 3.5 mm |
| Stem height | 1.3 mm |
| Hands (H × M × S) | 1.4 × 0.8 × 0.22 mm |
Technical data
| Beat rate | 18,000 vph (2.5 Hz) |
|---|---|
| Lift angle | — |
| Power reserve | 41 h |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | No |
|---|---|
| Date | No |
| Day | No |
| Hacking | No |
| Chronograph | No |
Mainspring
| GR code | GR4390 |
|---|---|
| Height | 1.55 mm |
| Thickness | 0.11 mm |
| Length | 280 mm |
| Barrel diameter | 9 mm |
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | ETA |
| Year | — |
| Family | — |
| Clone of | — |
Related calibers
Documents
None
Updated 7 days ago · 0 revisions