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Felsa 720
Basic Information
| Name | Felsa 720 |
|---|---|
| Manufacturer | Felsa |
| Launch Year | 1950 |
| Caliber Family | Description 350: sub second. 9" 351, 352, 358: sub second 359, 360: sweep second longer mainspring, new setting-lever spring: 720...722: sub second 725, 726: sweep second Related calibers Felsa 350, Felsa 351, Felsa 352, Felsa 358, Felsa 359, Felsa 360, Felsa 720, Felsa 721, Felsa 722, Felsa 725, Felsa 726 |
| Is COSC certified | No |
Technical Details
| Lignes Dimensions | 8.75 ‴ |
|---|---|
| Dimensions | 19.7 mm |
| Height | 3.3 mm |
| Further Measures | Mounting Diameter (Dm): 19.4mm Stem height (T): 1.7mm Mounting Height (F): 1.0mm |
| Power Reserve | 40 hours |
| Frequency | 18,000 vph |
| Jewels | 17 |
| Lift Angle | 52 degrees |
Complications and Specifications
| Shape | Round |
|---|---|
| Complications |
|
| 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 0.60 / 0.20mm |
|---|---|
| Hand Count | 3 |
| Country Of Manufacture | (not set) |
| Notes | Remarks: differences not known between 720...722 Other data: balance staff: U537 stem: W137 mainspring / battery: Zf1012, 1.40 x 7.5 x 0.07 x 280mm balance staff ronda: 3016 (8,75) stem ronda: 1177 (8,75) Mainspring: 1.400 x 7.000 x 0.075 x 260.000 mm |
| Signature | ca. 1950: 17 Jewels - OS (Felsa 721) |
Metadata
| Created At | Sep 15, 2023 |
|---|---|
| Updated At | Apr 23, 2025, 11:32:32 PM |
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