Features: Stainless Steel Case Stainless Steel Bracelet Swiss Made Automatic Movement Caliber: Hamilton H-10 25 Jewels Sapphire Crystal Black Dial Analog Display Open Heart Dial Power Reserve Upto 80 Hours Luminous Hands And Markers Screw Down Crown See Through Case Back Deployment Clasp 50m Water Resistance Approximate Case Diameter: 42mm Approximate Case Thickness: 12mm