316L Surgical-Quality Stainless Steel Case Jeweled Automatic Movement Jewel Bearings: 20 Jewels 42-Hour Power Reserve Beats per Hour (BPH): 21600/Hour Sapphire-Coated Mineral Crystal Pattern Dial Semi-Skeleton Dial Observation Caseback to view Movement Genuine Leather Crocodile-Embossed Strap Logo-Engraved Stainless Steel Clasp Luminous Hands Luminous Markers Day Sub-Dial Date Sub-Dial 45mm Diameter 5 ATM Water Resistance