Silver-tone stainless steel case with a black leather strap. Fixed silver-tone stainless steel bezel. Black dial with luminous silver-tone hands and index hour markers, Arabic numeral at the 12 o'clock position, minute markers on the outer rim hour markers. Minute markers around the outer rim. Dial Type: Analog. Luminescent hands and dial markers. Automatic date at the 6 o'clock position with crown-activated rapid calendar advance. Sub-dial displaying 7 day power reserve indicator subdials. IWC Calibre 51113 Automatic movement, based upon IWC 5011, containing 42 Jewels, composed of 286 parts, bitting at 21600 vph, and has a power reserve of approximately 168 hours. Scratch resistant sapphire crystal. Screw down crown. Sapphire crystal display case back. Round case shape, case size: 45.5 mm, case thickness: 15 mm. Pin buckle clasp. Functions: date, hour, minute, second, power reserve indicator. Additional Info: date displays at 6 o'clock position; 7 day power reserve when fully wound. Big Ingenieur Series. Dress watch style. Watch label: Swiss Made. IWC Big Ingenieur Men's Watch IW500501.