The Jaeger-LeCoultre Hybris Mechanica a Grande Sonnerie (the most complex watch in the world), Gyrotourbillon, and Reverso Complication a Triptyque.

This is apparently some holy grail of sonnerie watches…in addition to [the Westminster] melody as a chime, the watch features two others, as well as a silent mode. What does this mean? You know those Casio watches that beep at certain intervals? This watch does that same thing, but instead of a beep, you get a little song that is based on tiny hammers and gongs and a ridiculously complex ballet of gears and “magic”. —aBlogtoRead

The three-piece set is presented in a 1.3 ton leather-coated safe with an electronic locking system that has room for 8 more watches…for a grand total of $2.5 million.