| Manufacturer | Lemania |
| Caliber Number | 4650 |
| In-House? | Yes |
| Movement Type | Automatic, self-winding mechanical |
| Lignes | 10.5”’ |
| Diameter | 23.3mm |
| Height | 6mm |
| Jewel Count | 17 or 21 |
| Beat Rate | 18,000 vph |
| Lift Angle | Unconfirmed |
| Power Reserve | ~40 hours |
| Hand-Windable? | Yes |
| Anti-Shock Device | Incabloc |
| Hand Count | 3 |
| Functions | Central hours; central minutes; central sweeping seconds |
| Country of Manufacture | Switzerland, Swiss made |
| Known Models | (Add your watch to the comments below…) |
Lemania caliber 4650 is a vintage Swiss made automatic watch movement from the 1950s. The 4650 is a true no-date movement with 21 jewels (sometimes 17) and a frequency of 18,000 bph.
This caliber is also used as the basis for other watch brands. For example, the Tissot caliber 23.3R-21 is basically a Lemania 4650 with Tissot branding. If you know of other caliber numbers using the cal. 4650, please leave them in the comments below…
Additional Resources:
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Now that's a nice looking watch
Thank you for sharing.