Patek Philippe Grandmaster Chime Ref. 5175 (2.6 Million $)

The Patek Philippe Grand Master Chime Ref. 5175 Grande Sonnerie, Its the world’s most complicated wristwatch -- ever. It blends classic chiming complications like the grande and petite sonnerie with brand new ones like the date repeater, while also building in a state-of-the-art perpetual calendar. The Patek Philippe Grand Master Chime ref. 5175R will be a limited edition of seven pieces, with one residing in the Patek Philippe museum in Geneva. The other six will be priced at 2.5 million Swiss Francs (approximately $2.6 million at time of publishing).