Stainless steel case with a black (alligator) leather strap. Fixed stainless steel bezel. Silver dial with rose gold-tone leaf-style hands and index hour markers. Roman numerals amrk 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: 42 mm. Case thickness: 13.6 mm. Band width: 20 mm. Tang clasp. Water resistant at 30 meters / 100 feet. Functions: chronograph, date, day of the week, hour, minute, second. Portofino Series. Luxury watch style. Watch label: Swiss Made. IWC Portofino Chronograph Automatic Silver Dial Men's Watch IW391031.specs:Case Case Size:42Case Thickness:13.6 mmCase Material:Stainless SteelCase Shape:RoundCase Back:SolidBand Band Material:(Alligator) LeatherBand Type:StrapBand Color:BlackBand Width:20 mmClasp:TangDial Dial Color:SilverType:AnalogCrystal:Scratch Resistant SapphireHands:Rose Gold-tone Leaf-styleDial Markers:IndexSecond Markers:Roman Numerals amrk the 6 and 12 o'clock positions. Arabic Numeral Minute Markers (at 5 minute intervals). Minute Markers around the outer rimSub Dials:Three - 60 Second, 30 Minute and 12 HourBezel:FixedBezel Color:Silver-toneBezel Material:Stainless SteelCrown:Pull / PushInformation Brand:IWCSeries:PortofinoCollection Name:PortofinoGender:MensModel:IW391031Watch Label:Swiss MadeMovement:AutomaticEngine:IWC Calibre 75320Power Reserve:44 hoursFeatures Water Resistance:30 meters / 100 feetCalendar:Day of the Week and Date display at the 3 o'clock positionFunctions:Chronograph, Date, Day of the Week, Hour, Minute, SecondWatch Features:Alligator Leather, Analog, Gold, Leather, Stainless Steel, ChronographAdditional Info Watch Style:LuxuryWarranty:2 Year Goldia WarrantyUPC Code:7613375016328Goldia Sku:IWC3910-31Department:WatchesCategory:Watches