ETA 2661
Description
In the early 1970ies, ETA lauched their final movement series of 7 3/4 sized movements. Their variations ranged from a simple handwinding movement with 21600A/h (ETA 2640) to the high-beat selfwinding movement with day and date (ETA 2678).
From this series originates this caliber ETA 2661, a high-beat movement with date display.
Technical data
| Manufacturer: | ETA |
| Caliber: | 2661 |
| Size: | 7 3/4''' |
| A/h: | 28800 |
| lift angle: | 53° |
| Number of jewels: | 17 |
| Escapement: | Pallet lever |
| Balance types: |
Nickel anular balance |
| Shock protection(s): |
Incabloc |
| Balance bearing / direction hairspring: | Counterclockwise |
| Moveable stud: | yes |
| Adjust mechanism: | Hairspring key |
| Construction: |
|
| Winding mechanism: | yoke winding system |
| Features: |
|
| References: |
Flume: K3N1 - |
Usage gallery
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