Otero 78
Mechanical
Self-winding (rotor)
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Notes
hand-gear bridge early big like in family Otero 40...482 (Fig.6), later small (Fig.3)
jewel-bearing rotor (even if 7 jewels)
sophisticated excenter self-winding mechanism with just one gear stage (Fig.2, 4)
easy to operate rotor lock (Fig.5)
fixed mainspring, friction clutch on pawl wheel
Dimensions
| Width | 25.6 lignes (57.75 mm) |
|---|---|
| Height | 5.5 mm |
| Stem height | 1.2 mm |
| Hands (H × M × S) | 1.4 × 0.8 × 0.2 mm |
Technical data
| Beat rate | 18,000 vph (2.5 Hz) |
|---|---|
| Lift angle | — |
| Power reserve | 44 h |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | Rotor |
|---|---|
| Date | No |
| Day | No |
| Hacking | No |
| Chronograph | No |
Mainspring
| GR code | GR2904-X |
|---|---|
| Height | 1.2 mm |
| Thickness | 0.1 mm |
| Length | 320 mm |
| Barrel diameter | 9.5 mm |
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Otero |
| Year | — |
| Family | — |
| Clone of | — |
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Documents
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Updated 7 days ago · 0 revisions