Yema Launches Senans Grande Lune Moonphase Watch
Yema's first moonphase watch uses an in-house micro-rotor movement and opens preorders on November 11.
Updated on Nov. 6, 2026 in Space
Yema has released the Senans Grande Lune, its first moonphase watch, powered by the in-house Caliber CMM.22 automatic micro-rotor movement. Preorders open November 11, with prices of $2,790 on a leather strap and $2,864 on a steel mesh bracelet.
Why it matters
The launch marks Yema's entry into moonphase complications, a feature that has long been associated with traditional watchmaking. Its in-house movement, produced in Morteau, France, gives the brand a self-built alternative in a segment where many watches rely on outside calibers.
The watch uses the Caliber CMM.22 movement, which beats at 4Hz and holds a 70-hour power reserve in a 38.5mm stainless steel case. Each of the black, blue and champagne dial colors is limited to 200 pieces, and the source does not say how many total units will be produced.
The players
Yema
Yema is a French watchmaker based in Morteau, France, known for producing its own movements and vintage-inspired dive and pilot watches.
The details
The moon face is a stationary block of Grade X Super-LumiNova using Globolight technology, while an ultra-thin rotating mechanical bilobe passes over it to show the lunar cycle through an oversized aperture at 7:00 on the dial. The watch has no seconds hand and is offered on a leather pin buckle strap or a stainless steel mesh bracelet with a sliding clasp.
Timeline
November 11, 2026: Preorders open for the Senans Grande Lune.
Roadmap
The Senans Grande Lune is Yema's first moonphase dial, extending the brand's in-house caliber program beyond time-only movements. It places Yema alongside Swiss and other French makers that have built complications on self-produced micro-rotor movements.
Buyers interested in the Senans Grande Lune can expect preorders to open November 11, with the leather strap version priced at $2,790 and the steel mesh bracelet at $2,864. Because each dial color is limited to 200 pieces, interested collectors may want to plan their purchase around the preorder date.
The takeaway
The Senans Grande Lune shows how a mid-sized watch brand can build a complication around its own movement rather than sourcing one externally. Its limited dial runs and preorder structure reward buyers who track the November 11 opening.
What happens next
Preorders for the Senans Grande Lune open on November 11, 2026.
Further reading
For more on how timekeeping meets celestial observation, explore the Space section.
Source note: This article includes information reported by Gear Patrol.
