Features: Stainless Steel Case Silicone Strap Solar Movement Caliber: H851 Hardlex Crystal Black Dial Analog Digital Display Operating For Approximately 6 Months Power Save Approximately 20 Months Alarm Function Full-Auto Calendar LED Light Magnetic Resistance Luminous Hands And Markers Day And Date Display Rotating Bezel Screw Down Crown Screwed Case Back Buckle Clasp 200m Water Resistance Approximate Case Diameter: 47.8mm Approximate Case Thickness: 13.8mm Approximate Lug Width : 22mm