Franck Muller Aeternitas Mega 4

The Aeternitas Mega 4 ($2.58 million) by Franck Muller, the original daredevil of Swiss watchmaking, is the most complicated wristwatch in the world—by a long shot. Loaded with 1,483 components and 36 complications—including a grand tourbillon, perpetual calendar, equation of time, mono-pusher flyback chronograph, and a grande sonnerie that plays the Westminster Chime—the 18-karat white-gold self-winding timepiece makes it abundantly clear why Muller is now and forever the “Master of Complications.” (franckmuller.com)