The A. Lange & Sohne Saxonia Datograph Perpetual Calendar 410.038FE was redesigned for SIHH 2015. Each Lange Datograph Perpetual Calendar is a flyback chronograph with a perpetual calendar system. The perpetual calendar includes am/pm (danger zone) indicator, a day, date, month, and moon phase display. Each Datograph Perpetual includes a manufacture caliber L952.1 manual wind movement with a 36-hour power reserve, 18,000 VpH beat rate, and stop seconds functionality for precise setting of the time. Fine finish on this A Lange & Sohne watch includes bridges and plates in German silver (nickel, copper, zinc alloy), Glashutte stripes, mirrored anglage beveling of bridges, black polished and fired blue screws, and a hand engraved balance bridge. The Datograph features a dial of solid silver that is coated with ruthenium and graced with applied white gold baton indices. Hour and minute hands are filled with Super LumiNova for easy viewing at night. For 2015, the Datograph Perpetual has been refined with a darker dial, a more domed bezel profile, and the substitution of baton indices for the previous Roman numerals. The A Lange & Sohne Datograph 410.038 features a 41mm 18k white gold case surrounding a grey dial on a black alligator strap with an 18k white gold deployant buckle. Functions include hours, minutes, seconds. day, date, month, perpetual calendar, moon phase, chronograph and day/night indicator. The watch also measures 14mm in thickness and 50mm from lug-to-lug.
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