Brand: A Lange & Sohne
Style Number: 310.025
Also Called: 310025
Series: Langematik Perpetual
Style: Mens
Case: Platinum
Dial Color: Silver
Watch Bracelet / Strap: Leather - Black Crocodile with 7 perforations.
Watch Clasp: Platinum Tang Buckle
Movement: Automatic Winding
Engine: L922.1 (21,600 vph, 43 rubies, 478 parts)
Functions: Hours, Minutes, Perpetual calendar
Crystal: Sapphire - Anti-reflective
Case Diameter: 38.5 mm
Case Thickness: 10.2 mm
Caseback: Transparent Exhibition Display Back secured by six screws with Hallmarks and Lange engravings
Bezel Material: Platinum
Bezel Function: Fixed
Crown: Platinum, Fluted with A Lange Soehne engraving
Calendar: Perpetual calendar with moon-phase display and outsize date
Power Reserve: 46-hour power reserve
Watch Bracelet Length: 8.5 inches
Watch Bracelet Width: 17.0 - 20.0 mm
Style Number: 310.025
Also Called: 310025
Series: Langematik Perpetual
Style: Mens
Case: Platinum
Dial Color: Silver
Watch Bracelet / Strap: Leather - Black Crocodile with 7 perforations.
Watch Clasp: Platinum Tang Buckle
Movement: Automatic Winding
Engine: L922.1 (21,600 vph, 43 rubies, 478 parts)
Functions: Hours, Minutes, Perpetual calendar
Crystal: Sapphire - Anti-reflective
Case Diameter: 38.5 mm
Case Thickness: 10.2 mm
Caseback: Transparent Exhibition Display Back secured by six screws with Hallmarks and Lange engravings
Bezel Material: Platinum
Bezel Function: Fixed
Crown: Platinum, Fluted with A Lange Soehne engraving
Calendar: Perpetual calendar with moon-phase display and outsize date
Power Reserve: 46-hour power reserve
Watch Bracelet Length: 8.5 inches
Watch Bracelet Width: 17.0 - 20.0 mm