Brand IWC Model Aquatimer Chronograph Reference number IW376803 Movement Automatic Case material Steel Bracelet material Rubber Caliber Movement Automatic Caliber/movement 79320 Power reserve 44 h Case Case material Steel Case diameter 44 mm Try it on Thickness 17 mm Crystal Sapphire crystal Dial Black Bracelet/strap Bracelet material Rubber Bracelet color Black Clasp Buckle Functions Chronograph, Date Other Small seconds, Rotating Bezel Black dial with luminescence, Black rubber strap with IWC-patented quick-change system, Strap width 22.0 mm. CASE: Stainless steel case; Diameter 44.0 mm; Height 17.0 mm; Screw in crown; Water resistance 30.0 bar MOVEMENT: 79320 Calibre; Automatic, self-winding; 44 hours Power Reserve FEATURES: Small hacking seconds; IWC bracelet quick-change system; Sapphire glass, convex, antireflective coating on both sides; Day and date display; Mechanical external/internal rotating bezel with SafeDive system; Chronograph function with hours, minutes and seconds Will ship insured and register #mostwantedwatches