Key Features Case Shape Round Case Dimensions 40mm Case Thickness 12.20mm Case Material Gold Dial Color Black Crystal Scratch Resistant Sapphire Bezel Fixed Screw-in Crown Yes Water Resistance 30m Case Back Solid Band Material Rubber Color/Finish Black Band Name Rolex Oysterflex Clasp- Rolex Folding Oysterlock Safety Clasp Clasp Features Easylink 5mm comfort extension link Movement Automatic – Chronometer Complications-Chronograph