Stainless steel case with a black alligator leather strap. Fixed stainless steel bezel. Silvery white dial with silver-tone hands and index hour markers. Arabic numerals mark the 3, 9 and 12 o'clock positions. Minute markers. Date scale appears around the outer rim. Dial Type: Analog. Day of the week and month display above the center dial. Moonphase sub-dial at the 6 o'clock position. Automatic movement with a 42 hour power reserve. Scratch resistant sapphire crystal. Pull / push crown. Case diameter: 40 mm. Case thickness: 9.7 mm. Round case shape. Band width: 20 mm. Triple fold over clasp. Water resistant at 30 meters / 100 feet. Functions: perpetual calendar, hour, minute, second. Luxury watch style. Watch label: Swiss Made. Montblanc Heritage Chronometrie Perpetual Calendar Automatic Silvery White Dial Black Leather Men's Watch 112538.