The Blancpain Villeret Tourbillon Squelette has a cool transparent dial and a self-winding movement that shows off its inner workings. It's called the caliber 25 and it's one of the fancy movements that Blancpain is known for. The tourbillon escapement is a special feature and the watch can keep ticking for 8 whole days before needing to be wound up again. The reference number for this model is 6025AS-3430-55 and it comes in a fancy red gold case.