one-hour increments . To accomplish these new features , Patek Philippe built new caliber 31-260 PS FUS 24H . The movement is an update to Patek Philippe ’ s 31-260 ultra-thin self-winding base caliber from 2011 , which here includes a 24-hour mechanism and a Travel Time mechanism .
In 2021 , Patek Philippe further enhanced the initial caliber ( then placed into the In-Line Perpetual Calendar Reference 5236P- 001 ) with a new operating frequency of 4 Hz , a twenty per cent increase in barrel-spring torque , a mini-rotor in platinum and a reduction wheel that uncouples the self-winding mechanism when the watch is being manually wound .
The watch ’ s 42mm rose-gold case nicely complements a sharplooking blue dial that Patek Philippe has set with contemporary , high-relief rose gold numerals , hour markers and five-minute cabochons .
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