Yema · France
Yema CMM.10
Calibre Manufacture Morteau 10; automatic three-hand movement designed and assembled by Yema in Morteau with Franco-Swiss components. Yema rates the CMM.10 at -3/+5 seconds per day and 70 hours of power reserve. CMM.10 executions include both time-only and date-display watches, depending on the model.
Hz
Jewels
Reserve
In catalog
Technical specification
| Manufacturer | Yema |
| Origin | France |
| Type | Automatic |
| Beat rate | 28,800 bph · 4 Hz |
| Jewels | 27 |
| Power reserve | 70 h |
| Diameter | 28 mm |
| Hacking seconds | Yes |
| Hand-winding | Yes |
| Date | Yes |
| GMT | No |
| Chronograph | No |
2 models
Watches with this caliber
FAQ
Is the Yema CMM.10 automatic or manual?
The Yema CMM.10 is an automatic (self-winding) movement: a rotor winds the mainspring from the motion of your wrist, so it needs no battery. It can also be wound by hand via the crown.
What is the power reserve of the Yema CMM.10?
About 70 hours on a full wind — comfortably over two days, so it survives a weekend off the wrist. Power reserve is how long the Yema CMM.10 keeps running once you stop wearing or winding it.
Does the Yema CMM.10 hack (stop the seconds when you set it)?
Yes. Pulling the crown stops the seconds hand, so the Yema CMM.10 can be set precisely to a reference time before you push the crown back in. Hacking is what lets you sync several watches — or a watch and a phone — to the exact second.
Does the Yema CMM.10 have a date function?
Yes — the Yema CMM.10 can drive a date display, though whether a given watch actually shows the date depends on the dial the maker chose, so check the individual model rather than the movement.
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