Brand: A Lange & Sohne
Style Number: 308.021
Also Called: 308021
Series: Langematik Big Date
Style: Mens
Case: 18k Yellow Gold
Dial Color: Silver
Watch Bracelet / Strap: Leather - Brown Crocodile
Movement: Self-winding mechanical
Engine: Lange Calibre L921.4 (378 parts, 45 jewels, 21,600vph, Bi-directional motor, Zero-reset)
Functions: Hours, Minutes, Small Seconds, Large Date
Crystal: Sapphire - Anti-Reflective on Inside, Domed on both sides
Case Diameter: 37.0 mm
Case Thickness: 9.7 mm
Caseback: Sapphire Crystal Display back
Bezel Material: 18k Yellow Gold
Bezel Function: Fixed
Crown: 18k Yellow Gold, Fluted
Calendar: Automatic Two-digit Big Date at 12
Power Reserve: 46-hour power reserve
Watch Bracelet Length: 8.0 inches
Additional Info: Small seconds at 3, Blued-steel seconds hand.