Yema Senans Grande Lune: I want to watch that mechanical shadow

I really like this Yema, and the oversized glowing moon is most of the reason. A moon phase is exactly the kind of complication I can enjoy without pretending I need it. The Senans Grande Lune gives that fascination a whole section of the dial, and the off-center aperture makes it look much less predictable than another little moon tucked into a symmetrical calendar display.

The moon itself stays still. According to the launch coverage, Yema uses a shaped block of luminous material and moves a thin mechanical shadow across it to show the lunar phase. I would want to see that transition in person. It is an unusually direct way of making the mechanism part of what I enjoy looking at, and the moon's texture gives the large opening a reason to be there.

Three dials, with one shared movement

Blue, golden and black versions share the 38.5 mm steel case and CMM.22 micro-rotor movement. Each color can be ordered on leather or mesh, for six executions rather than six different watches. The stated limit is 200 per dial color, shared across attachments. The blue would be my first choice, although the golden dial is a close second in the maker's photographs.

The reported lug-to-lug measurement is 46.4 mm. Monochrome gives the case thickness as 8.7 mm while explicitly excluding the double-domed sapphire crystal, so I wouldn't repeat that figure as total wrist height. The stepped polished bezel and brushed case middle look well matched to the more traditional dial pattern. I haven't handled one, measured its overall height or tested its water resistance; the coverage specifies 50 meters.

The CMM.22 runs at 4 Hz and has a stated 70-hour reserve. Its micro-rotor architecture is visible through the back, and that gives me a second reason to turn the watch over. I also like that the dial can have both a conventional dress-watch surface and this very large, slightly strange moon without becoming unreadable in the photographs.

The source page needs a qualification

The official product titles and attachment references identify the Senans, but the checked body text contains unrelated Granvelle Renaissance material. I have used the exact titles and photographs for identity and checked the Senans specifications against November 5 Monochrome and Time+Tide coverage. That template problem stays a source gap rather than being quietly copied as fact.

Those reports quote €2,470 on leather and €2,570 on mesh. A dependable US execution price remains unverified as of November 7, 2026, and the original maker announcement day is unresolved. I'm giving it 110 out of 120 bezel clicks. The case, micro-rotor and big mechanical-shadow moon give me plenty to like before I even start choosing a strap.