Tissot 2770
Mechanical
c. 1976
Self-winding (rotor)
Date
No photos yet
Notes
1976-1979
parts in date, crown mechanism, and automatic made of self-lubricating plastic materials
unique: a long thin mainspring not only allows a two-stage gear between rotor and barrel, but also the train has one wheel less (Fig.5)
Dimensions
| Width | 25.6 lignes (57.75 mm) |
|---|---|
| Height | 6.1 mm |
| Stem height | 2 mm |
| Hands (H × M × S) | 2.1 × 1.1 × 0.2 mm |
Technical data
| Beat rate | 21,600 vph (3 Hz) |
|---|---|
| Lift angle | — |
| Power reserve | 39 h |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | Rotor |
|---|---|
| Date | Yes (quick set) |
| Day | No |
| Hacking | No |
| Chronograph | No |
Mainspring
| GR code | — |
|---|---|
| Height | 11 mm |
| Thickness | 0.07 mm |
| Length | 600 mm |
| Barrel diameter | 0.9 mm |
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Tissot |
| Year | c. 1976 |
| Family | — |
| Clone of | — |
Related calibers
Documents
None
Updated 7 days ago · 0 revisions