316L Surgical-Quality Stainless Steel Case Automatic Movement Jewel Bearings: 20 Jewels 36 Hour Power Reserve Beats per Hour (BPH): 21600/Hour Sapphire-Coated Mineral Crystal Skeleton Dial Observation Caseback to view Movement Genuine Leather Strap Logo-Engraved Stainless Steel Clasp Luminous Hands Luminous Markers 43mm Diameter 10 ATM Water Resistance