This platinum A. Lange & Söhne Perpetual Calendar is simply breathtaking. The exquisite 38.5mm case houses Lange's superb automatic movement with micro-rotor (visible through the sapphire caseback), which features the patented 'Zero-Reset' mecahnism. Easy to read, the light grey dial displays Lange's signature large date window as well as the day, date, month, moonphase leap year, and it also features a day/night indicator. Presented totally complete with its impressive Lange winding box, booklet, stylus and stamped Lange certificate. Fitted to a black Lange alligator strap with platinum pin buckle.