Features: Stainless Steel Case Stainless Steel Bracelet Eco-Drive Movement Caliber: E660 Sapphire Crystal Black Dial Analog Display Chronograph Function Perpetual Calendar Radio Controlled Power Reserve Indicator World Time Alarm GMT 12/24 Hours Display Luminous Hands And Markers Date Display Screw Down Crown Solid Case Back Deployment Clasp 200m Water Resistance Approximate Case Diameter: 42.6mm Approximate Case Thickness: 13mm Approximate Lug Width : 23mm