New in the Watchismo Vault collection, the $17,500 Devon Tread watches, which use a cunning system of belts and optical sensors to keep and display the time. No, I don’t have $17.5K to drop on something like this right this second, but if you asked me to imagine what a $17.5K watch should look like, it would be something much like this: “The exposed movement is a mesmerizing display of the patented interwoven system of conveyor belts. This series of belts includes critical elements that allow the optical recognition system to know every belt position at all times.”