Daniel Roth's most marketable claim to fame for this new Athys Moon 2134 watch is that it will not require any moon phase calendar adjustment for 125 years. That is of course unless you forget the wind the manually-wound movement and then you are out of luck for that whole impressive 125 year number. Though I have a feeling if you are a proud owner of this watch you'll be very happy to wear it (and wind it) often.

What makes the moon phase function in this watch different than those in other moon phase calendar movement based watches? It has to do with the moon phase complication. Instead of the normal gearing that requires a moonphase to be adjusted every few years, that in the Daniel Roth Calibre 2300 (DR2300) movement has a much larger gear with more teeth. This allows for the movement of the moon through its phases to be much more precise (combined with other mechanisms and gears of course) and thus not require adjustment for such a long period of time. Truly the type of issue only your heirs, or heirs' heirs need concern themselves with.

The Athys Moon 2134 is available in 18k red or white gold in the traditional Daniel Roth watch case shape that you either love or don't. but don't knock it until you get one on your wrist. The moon phase disc is rendered with a more realistic image of the moon's surface while the the rest of the watch dial has the time, a subsidiary seconds dial, and the date. A really good looking and classic watch with a unique take on engineering the moon phase, one of the most desirable and popular complications in the horological enthusiast community.

Ariel Adams publishes the luxury watch review site aBlogtoRead.com.