Stainless steel case with a black alligator leather strap. Fixed stainless steel bezel. Black dial with silver-tone hands and stick hour markers. Roman numerals mark the 6 and 12 o'clock positions. Minute markers around the outer rim. Dial Type: Digital. Luminescent hands and markers. Day of the week and date display at the 3 o'clock position. Chronograph - three sub-dials displaying: 60 seconds, 30 minutes and 12 hours. Automatic movement. Scratch resistant sapphire crystal. Screw down crown. Solid case back. Case diameter: 42 mm. Case thickness: 13.5 mm. Tang clasp. Water resistant at 30 meters / 100 feet. Functions: hours, minutes, seconds, chronograph, day, date, stopwatch. IWC Portofino Chronograph Automatic Mens Watch IW391002.