This is quite the amazing timepiece. The Sol Invictus puts a modern spin on the perpetual motion machine, using micromotors, solar cells, and a chain system to create an incredibly complicated (and incredibly cool looking) timepiece. The is the first watch to combine a chain & fusée with drums and vertical tourbillon in a watch, and the result is stunning.

Designed by Jean-François Ruchonnet, who was working with Marc Alfieri to put a vertical display movement into the center. The designer then put solar cells at both ends of the timepiece, and concealed micro-motors and batteries under the cells. The end result is an steampunk-esque combination of gears and drums, proudly displayed via the front crystal as well as a see through back. Each one is hand made by swiss gnomes after the customer orders it, and for good reason. Retail on this timepiece will set you back $563,624.56 US. Now THAT’S a big boy watch.

[via Hodinkee]