316L Surgical-Quality Stainless Steel Case Jeweled Automatic Movement Jewel Bearings: 22 Jewels 40-Hour Power Reserve Beats per Hour (BPH): 21600/Hour Observation Caseback to View Movement Sapphire-Coated Mineral Crystal Skeleton Dial Crown Protector Case Design Genuine Leather Crocodile-Embossed Strap Logo-Engraved Stainless Steel Clasp Super Luminova Hands Super Luminova Markers Seconds Sub-Dial 48mm Diameter 5ATM Water Resistance