Features: Stainless Steel Case Black Rubber Strap Quartz Movement Caliber: G10.962 Scratch Resistant Sapphire Crystal Black Dial Luminous Hands And Markers Chronograph Function Air Speed Markings Around Outer Rim GMT Function Date Display Screw Down Crown Solid Case Back Buckle Clasp 100M Water Resistance Approximate Case Diameter: 46mm Approximate Case Thickness: 13.75mm