A. LANGE & SÖHNE. AN ATTRACTIVE PLATINUM PERPETUAL CALENDAR FLYBACK CHRONOGRAPH WRISTWATCH WITH MOON PHASES, LEAP YEAR, DAY/NIGHT INDICATON, AND OUTSIZED DATE

Introduced at the SIHH in 2006, the Datograph Perpetual is A. Lange & Söhne's first wristwatch combining a chronograph and perpetual calendar. The timepiece features a flyback chronograph and precisely jumping minute counter that allows the chronograph to be reset and restarted instantaneously, as well as a perpetual calendar that remains accurate until the year 2100 when it has to be manually advanced by one day.

Turning the watch over, the in-house cal. L925.1 is displayed through a sapphire crystal caseback revealing its delicate hand-finished components comprised of 556 individual parts. The hand-finished components are executed to the highest level.