Need a part for this caliber? Supporters unlock the parts catalog, factory equivalents, and the donor finder that shows which other movements can supply the part you need.
Become a Supporter
Updates to data and images are welcome from our readers.
Hamilton 624
Basic Information
| Name | Hamilton 624 |
|---|---|
| Alternative Name | ETA 2522 |
| Base Calibre | ETA 2522 |
| Manufacturer | Hamilton |
| Launch Year | 1966 |
| Is COSC certified | No |
Timegrapher
Beat rate
18,000 bph
Frequency
2.5 Hz
Reference: healthy amplitude ≈ 270–315° fully wound (>200° at 24 h); beat error ideally < 0.5 ms.
Technical Details
| Lignes Dimensions | 11.5 ‴ |
|---|---|
| Dimensions | 26 mm |
| Height | 4.5 mm |
| Further Measures | Mounting Diameter (Dm): 25.6mm Stem height (T): 1.7mm Mounting Height (F): 1.1mm |
| Power Reserve | 46 hours |
| Frequency | 18,000 vph |
| Jewels | 17 |
Complications and Specifications
| Shape | Round |
|---|---|
| Complications |
|
| Shock Protection | KIF |
| 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 | 1.50 x 0.90 x 0.21mm |
|---|---|
| Hand Count | 3 |
| Country Of Manufacture | Switzerland |
| Notes | Remarks: like ETA 2522, but Kif shock protection, different rotor shape, and anodized alumina barrel with life-time lubrication, differences not known between 74, 624, probably just the designators were changed in 1966, as samples with both numbers are known from this year Other data: balance staff: U2905 stem: W2919 |
| Signature | 1966: HYL, Hamilton Watch Co. 623 (cal. 73 under balance), Swiss, 17 Jewels - Patented; Kif-Flector (Hamilton 73) |
| Import Codes |
|
Compatible Parts
328 other caliber(s) share compatible parts with this caliber.
79 compatible part(s) available — Supporter feature.
Metadata
| Created At | Sep 15, 2023 |
|---|---|
| Updated At | May 26, 2026, 4:43:50 AM |
Loading...