A. Lange & Sohne Langematik Perpetual (ref. 310.025), featuring the Caliber L922.1 mechanical automatic movement (43 jewels, 21,600 vph) with an approximate 46-hour power reserve; rhodiumed silver dial with applied Roman numeral hour markers; perpetual calendar with patented large double window date display at 12 o'clock, subdial indicating the month with inset leap year indicator at 3 o'clock, small seconds subdial with inset moonphase aperture located at 6 o'clock, and day-of-week subdial with inset 24-hour indicator at 9 o'clock; sapphire-crystal, transparent case back; and 38.5mm, platinum case on a black crocodile strap with a platinum ardillon buckle. Case, dial and movement signed A. Lange & Sohne.

Specifications

Manufacturer's Reference # 310.025
Gender: Men's
Circa: 2000s
Case Shape: Round
Case Size: 38 mm diameter
Case Thickness: 10 mm
Case Material: Platinum
Crystal: Sapphire
Dial Color: Silver Gray
Dial Markers: Roman
Movement: Automatic
Water Resistance: 30 meters
Strap/Bracelet: Strap - Tang
Strap/Bracelet Material: Alligator/Crocodile
Strap Color: Black
Condition: Excellent
Features: Big Date, Day, Day/Night, Month, Moon Phase, Perpetual Calendar, Second Hand

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