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Eterna 12660B
Basic Information
| Name | Eterna 12660B |
|---|---|
| Alternative Name | ETA 2660 |
| Base Calibre | ETA 2660 |
| Manufacturer | Eterna |
| Launch Year | 1971 |
| Caliber Family | Description 12660: manual wind 12661: manual wind, date 12668: manual wind, day, date 12670: automatic 12671: automatic, date 12678: automatic, day, date suffix -1: meaning unknown suffix B: no second Related calibers Eterna 12660, Eterna 12660B, Eterna 12661, Eterna 12668, Eterna 12670, Eterna 12671, Eterna 12671-1, Eterna 12678 |
| Is COSC certified | No |
Technical Details
| Lignes Dimensions | 7.75 ‴ |
|---|---|
| Dimensions | 17.5 mm |
| Height | 3.5 mm |
| Further Measures | Mounting Diameter (Dm): 17.2mm Stem height (T): 1.75mm Mounting Height (F): 1.15mm |
| Power Reserve | 49 hours |
| Frequency | 28,800 vph |
| Jewels | 17 |
Complications and Specifications
| Shape | Round |
|---|---|
| Shock Protection | KIF |
| Regulator Type | Pinned Regulator (or Index Regulator) |
| Movement Type | Manual |
| Escapement Type | Swiss Lever |
| Control Type | Balance Wheel |
| Winding Type | Stem Winding (Crown) |
| Setting Type | Stem Set (Crown Pull) |
Additional Information
| Hand Sizes | 1.20 x 0.70mm |
|---|---|
| Hand Count | 2 |
| Country Of Manufacture | Switzerland |
| Notes | Remarks: 1971- temporary or optionally micrometer regulator (Fig. 1) Other data: balance staff: U3519 stem: W3409 mainspring / battery: 1.32 x 7.0 x 0.065 x 350mm |
| Signature | 1-2) ca. 1970: Eterna, Swiss - Patented; Kif-Ultraflex 3-4) ca. 1975: Eterna, Swiss - Patented; Kif-Ultraflex |
| Import Codes |
Metadata
| Created At | Sep 15, 2023 |
|---|---|
| Updated At | May 26, 2026, 4:43:49 AM |
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