Amongst manufacturers, Patek Philippe has a long history. Polish watchmaker Antoni Norbert Patek started making pocket watches in 1839 in Geneva, along with his fellow Polish migrant Franciszek Czapek. They separated in 1844, and in 1845 Patek joined with the French watchmaker Adrien Philippe, inventor of the keyless winding mechanism. In 1851, Patek Philippe & Co was founded. In 1868, Patek Philippe made their first wristwatch. They have also pioneered the perpetual calendar, split-seconds hand, chronograph, and minute repeater in watches. In 1989, Patek created one of the most complicated mechanical watches ever made, the Calibre 89, created for the 150th anniversary of the company. It holds 33 complications, including the date of Easter, a thermometer, time of sunrise, equation of time, sidereal time, and many other indicators. 1,728 unique parts allow sidereal time a 2,800 star chart, and more. The Calibre 89 is also able to add a day to February for leap years while leaving out the extra day for every 100 year interval.

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