Ressence. And they make beauties.
That is a picture of what I believe is their latest, the Type 3. It is, in my opinion, an amazing watch. The top is liquid filled, and gives that very interesting flat view of the dial at any angle. It is mechanical, powered by a (heavily) modified 2824 I believe, and the movement is transferred to the dial via magnets. You don't see the crown for good reasonm - it doesn't have one. You set it on the back of the watch with a special clutch-like modification.
The sub-dial at 4 is a seconds counter - it catalogues them on a 6-minute scale, which is pretty interesting. All in, it gives the watch a very... stoic approach. There is a lot going on, but the look is very clean and calm.
My only niggle is about the lugs. They are fixed, and not at a great angle.
It's a very steep hill to climb at about $25k, but I don't know another watch like it.