Few engineering marvels are designed to be taken a kilometer under the sea. In fact, apart from nuclear submarines and diving watches, we can’t think of any.

The KonTiki Diver from Eterna, however, is clever for much more than just its ocean depths survival skills.

The mechanical movement of the watch is sealed within that black, watertight container behind the face, and anchored to the band of the watch by its ‘hinged lid’. And it’s the first diving watch without a screw-in crown, and it’s a crown you can even wind underwater if you feel as though you need to start things over on the ocean floor.

As our angry friends at Chad the Watch Guy point out, however, if you live in the States you’re going to have to swim to Switzerland to pick one of these up.

Yeah, you heard us. Swim to Switzerland.

Kon Tiki 1000 Meter Diver [Chad the Watch Guy]