Features: Stainless Steel Case Stainless Steel Bracelet Solar Powered Caliber: V157 Hardlex Crystal Black Dial Luminous Hands And Markers Rotating Bezel Date Display Energy Depletion Forewarning Function Overcharging Prevention Function Instant-Start Function Screw Down Crown Screw Case Back Three Fold Clasp With Push Button 100M Water Resistant Approximate Case Diameter: 45.6mm Approximate Case Thickness: 12.5mm