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Omega 1155
Basic Information
| Name | Omega 1155 |
|---|---|
| Alternative Name | ETA 7750, Valjoux 7750 |
| Base Calibre | Valjoux 7750 |
| Manufacturer | Omega |
| Launch Year | 1990 |
| Is COSC certified | Yes |
Timegrapher
Beat rate
28,800 bph
Frequency
4 Hz
Reference: healthy amplitude ≈ 270–315° fully wound (>200° at 24 h); beat error ideally < 0.5 ms.
Technical Details
| Lignes Dimensions | 13.25 ‴ |
|---|---|
| Dimensions | 30.4 mm |
| Height | 7.9 mm |
| Further Measures | Mounting Diameter (Dm): 30.0mm Stem height (T): 3.0mm Mounting Height (F): 1.9mm |
| Power Reserve | 46 hours |
| Frequency | 28,800 vph |
| Jewels | 17 |
Complications and Specifications
| Shape | Round |
|---|---|
| Complications |
|
| Shock Protection | Incabloc |
| Regulator Type | Pinned Regulator (or Index Regulator) |
| Movement Type | Automatic |
| Rotor Type | Central Rotor |
| Escapement Type | Swiss Lever |
| Control Type | Balance Wheel |
| Winding Type | Automatic (Rotor-Driven) |
| Setting Type | Stem Set (Crown Pull) |
Additional Information
| Hand Sizes | 2.00 x 1.20 x 0.25 / 0.18 x 0.18 x 0.18mm |
|---|---|
| Hand Count | 5 |
| Country Of Manufacture | Switzerland |
| Notes | Remarks: 1990- Other data: balance staff: U3777 stem: W3706 (thread 1.2mm) mainspring / battery: 1.50 x 12.5 x 0.117 x 620mm |
| Signature | 1996: Omega, Swiss, 25 Jewels; Incabloc (Omega 1152) |
Compatible Parts
1147 other caliber(s) share compatible parts with this caliber.
96 compatible part(s) available — Supporter feature.
Metadata
| Created At | Sep 15, 2023 |
|---|---|
| Updated At | May 26, 2026, 4:43:55 AM |
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