Platinum case with a platinum bracelet. Fixed bezel. Silver dial with silver-tone hands and Roman numeral and index hour markers. Tachymeter scale around the outer rim. Dial Type: Analog. Date display at the 12 o'clock position. Chronograph - sub-dials displaying: four- 60 seconds( day), month(30 minutes) leap year, power reserve sub-dial. A. Lange & Sohne Calibre L952.1 automatic movement with about 36 hours of power reserve. Scratch resistant sapphire crystal. Case size: 41 mm. Case thickness: 13.5 mm. Round case shape. Deployment clasp. Water resistant at 30 meters / 100 feet. Functions: perpetual calendar, moon phase, chronograph, column wheel, flyback, leap year, month, big date, day, GMT, second time zone, hour, minute, small second. Luxury watch style. Watch label: Made in Germany. A. Lange Sohne Datograph Perpetual Mens Watch 410.425.