Designed for the pocket instead of the wrist, the Caliber 89 debuted in 1989, after nine years of development, to help celebrate the 50th anniversary of watchmaker Patek Philippe. Just four were ever manufactured, each made from a different precious metal (yellow gold, white gold, rose gold, and platinum) but the limited availability was also due to the complexity of the timepiece. The Caliber 89 weighed in at 2.5 pounds and featured 1,728 components that included 24 moving hands, a thermometer, and even a star chart. When it debuted in 1989, it was the most complicated mechanical watch to date: a distinction it held for 26 years.
It featured 33 complications, which are features that don’t involve displaying the time, and with a price tag of around $5 million each, it’s hard to imagine the Caliber 89 ever actually being stuffed into a pocket.