316L Surgical-Quality Stainless Steel Case Jeweled Automatic Movement Jewel Bearings: 20 Jewels 36-Hour Power Reserve Beats per Hour (BPH): 21600/Hour Sapphire-Coated Mineral Crystal Semi-Skeleton Dial Observation Caseback to view Movement Genuine Leather Strap Logo-Engraved Stainless Steel Clasp Luminous Hands 45mm Diameter 5 ATM Water Resistance