A see-through case back adds a twist to the traditional design of the Jazzmaster Viewmatic. Contemporary watchmaking and quality craftsmanship find the perfect balance in this handsomely refined timepiece. Features WATCH Reference : H32515145Caliber : H-10Collection : JazzmasterMovement : AutomaticCase size : 40mmDial color : BlueCase material : Stainless steelCrystal : SapphireLug width : 20mmPower reserve : 80-hour power reserveWater Resistance : 5 bar (50m)/73 psi (164ft)Open Case Back : Yes BRACELET/STRAP Strap reference : H605.325.100Strap type : Stainless steelBuckle type : Folding claspBuckle width : 20mm Movement H-10 A three-hand movement with or without a date function and boasting a superior power reserve of 80 hours, the H-10 appears with intricate contrasting snail and pearled patterns for the American Classic models it drives and streamlined surfaces for the pilots’ watches.