Features: Stainless Steel Case Stainless Steel Bracelet Automatic Movement Caliber: 8800 35 Jewels Domed scratch Resistant Sapphire crystal With Anti?Reflective Treatment On Both Sides Blue Dial Analog Display Power Reserve Up to 55 Hours Anti-Magnetic Chronometer Helium Escape Valve Self Winding Luminous Hands And Markers Date Display Unidirectional Rotating Bezel Screw In Crown See Through Case Back Deployment Clasp 300M Water Resistance Approximate Case Diameter: 42.00 mm Approximate Case Thickness: 13.60 mm Approximate Lug Width: 20.00 mm nbsp;