IWC caliber 52640

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Brand:	IWC
Reference:	52640
Base:	IWC 52010
Movement:	Automatic
Display:	Analog
Diameter:	38.20
Jewels:	54
Reserve:	168
Frequency:	28800
Date:	Date, Day, Month, Perpetual Calendar, Year Indicator
Hands:	Hours, Minutes, Small Seconds
Astronomical:	Moonphase
Additionals:	Power Reserve Indicator

52640 description

52640 Calibre; IWC 'Eternal' calendar. IWC’s first secular perpetual calendar automatically takes into account the Gregorian calendar’s complex leap year exceptions by skipping three leap years over a 400-year period. In addition, its moon phase display is so precise that it will – theoretically – only deviate by one day after 45 million years.

IWC-manufactured movement
Automatic, self-winding
168 hours Power Reserve
Frequency 28'800 VPH (4 Hz)
396 Components
54 Jewels

Eternal calendar with displays for the date, day, month, year in four digits and eternal moon phase