Whenever the Swiss come out with an over-the-top complication, invariably the real area of interest is the mechanism required to make it go. So it is with Maximus, the oversize tourbillon with a 27 mm cage the Neuchâtel-based rm of Kerbedanz (212.847.1371, kerbedanz.com) unveiled two years ago. The cage is nearly a third larger than its nearest competitor’s but weighs just 1.35 grams, thanks to its titanium construction. Naturally, the beast is an energy monster, and the developers had to do everything they could in the name of conservation. The frequency is kept to 2.5 Hz (18,000 vph), the minimum on which a wristwatch can run and compensate for movement and shocks. The carriage rotates once every six minutes instead of the usual 60 seconds. Nevertheless, it takes four spring barrels in parallel, each driving the same centrally mounted wheel, to keep it moving, and then only for 54 hours at a stretch. The image it conjures is one of those enormous mid-20th-century steam locomotives with multiple drive wheels—probably just the sense of power it was designed to convey.