Silver-tone stainless steel case. Black alligator leather strap. Fixed silver-tone bezel. Black dial featuring analog display with luminous hands and index markers, including Roman numerals at 6 and 12 o'clock positions and minute/30-minute markers on the outer rim. Day of week and date window at the 3 o'clock position. IWC Calibre 79320 automatic movement (based on ETA 7750) with 31 jewels, beating rate 28800 vph, approximate 44-hour power reserve. Scratch-resistant sapphire crystal. Solid case back. Analog chronograph functions via three sub-dials: seconds (60 sec), minutes (30 min), and hours (12 hr). Water resistance up to 30 meters / 100 feet. Round shape, size 42 mm, thickness 13.5 mm; band width 20 mm with tang clasp.
![IWC Portofino Automatic Silver Dial Mens Watch [3565-05] iw356505](https://cdn.lepodium.net/images/000/069/69551-2.jpg)
