Features: Carbonox Case Rubber Strap Quartz Movement Caliber: RONDA 5030.D Sapphire Crystal With Anti-Reflective Coating Black Dial Analog Display Chronograph Function Luminous Hands And Markers Date Display Uni Directional Rotating Bezel Double Security Gasket Crown Screwed Case Back Buckle Clasp 300m Water Resistance Approximate Case Diameter: 45mm Approximate Case Thickness: 14mm Approximate Lug Width: 24mm