Jaeger-LeCoultre Master Calendar Automatic. Stainless steel case with a black alligator leather strap. Fixed stainless steel bezel. Silver dial with silver-tone hands and stick hour markers. Arabic numerals mark the 3, 9 and 12 o'clock positions. Dial Type: Analog. Date around outer rim, month and day at the 12 o'clock position. Small seconds sub-dial at the 6 o'clock position. Automatic movement with 43 hour power reserve. Calibre 866 engine. Scratch resistant sapphire crystal. Case diameter: 39 mm. Round case shape. Tang clasp. Water resistant at 50 meters / 165 feet. Functions: moonphase, month, date, day, hour, minute, second.