Material & Measurements Model: IW377730 Manufacturer: IWC Series: Pilots Type: Men's watch, Dress / Sport Diameter: Ø 43.00 mm Thickness: 15.20 mm Case: Brushed/polished steel Back case rear: Solid Bracelet: Green leather Dial: Black with luminescent markers arabic numerals and index markings, luminescent hands Buckle: Tang type buckle made of steel Glass: Scratch-proof sapphire crystal Bezel: Steel, brushed/polished Movement & Functions Movement type: Automatic winding Seconds hand: Floating Movement: With 25 jewels, 28800 vph Power reserve: 44 hours Date: Day and date Water protection: 6 ATM Functions: - Separate seconds dial - Chronograph Other: Screw down crown