platinum., sapphire glass, screwed-in case back, caseback with sapphire glass
buckle in platinum
massiv silver, applied markers, roman numerals and hands in yellow gold
mechanical with manual winding, Lange Caliber L 952.1,
53 jewels, 18800 A/h, 72-hour Power Reserve,
hours, minutes, small seconds, large date (patented), power reserve, Flyback chronograph with precisely jumping minute counter as well as perpetual calendar with outsize date, moonphase display, day-of-week, month, leap year display, small seconds hand with stop seconds, and a day/night indicator.