展开Stainless steel case with a black (alligator) leather strap. Fixed stainless steel bezel. Black dial with silver-tone leaf-style hands and index hour markers. Roman numerals mark the 6 and 12 o'clock positions. Arabic numeral minute markers (at 5 minute intervals). Minute markers around the outer rim. Dial Type: Analog. Day of the week and date display at the 3 o'clock position. Chronograph - three sub-dials displaying: 60 second, 30 minute and 12 hour. IWC calibre 75320 automatic movement, based upon Sellita SW500-1, containing 25 Jewels, bitting at 28800 vph, and has a power reserve of approximately 44 hours. Scratch resistant sapphire crystal. Pull / push crown. Solid case back. Round case shape. Case size: 43 mm. Case thickness: 13.6 mm. Band width: 20 mm. Tang clasp. Water resistant at 30 meters / 100 feet. Functions: chronograph, date, day, hour, minute, second. Portofino Series. Luxury watch style. Watch label: Swiss Made. IWC Portofino Chronograph Automatic Black Dial Mens Watch 3910-29.