Silver-tone stainless steel case with a black (alligator) leather strap. Fixed silver-tone stainless steel bezel. Black dial with silver-tone hands and index hour markers. Roman numerals mark the 6 and 12 o'clock positions. minute markers around the outer rim. Dial Type: Analog. 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. IWC Calibre 79320 Automatic movement, based upon ETA 7750, containing 31 Jewels, bitting at 28800 vph, and has a power reserve of approximately 44 hours. Scratch resistant sapphire crystal. Screw down crown. Solid case back. Round case shape, case size: 42 mm, case thickness: 13.5 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. Item Variations: IW3910-02 / 3910-02 / 391002. IWC Portofino Chronograph Automatic Mens Watch IW391002.
