Features:Stainless Steel CaseStainless Steel BraceletEco- Drive MovementCaliber: U680Sapphire CrystalBlack DialAnalog Digital DisplayChronograph FunctionLED LightsPower ReserveDual TimeWorld TimeInsufficient Charge Warning FunctionOvercharge Prevention FunctionGlobal Radio-ControlledSummer Time ON / OFFLuminous HandsDay And Date DisplaySolid Case BackDeployment Clasp200M Water ResistanceApproximate Case Diameter: 45.4mmApproximate Case Thickness: 13.9mm