316L Surgical-Quality Stainless Steel Case Jeweled Japanese Automatic Movement Jewel Bearings: 21 Jewels 36-Hour Power Reserve Beats per Hour (BPH): 21600/Hour Sapphire-Coated Mineral Crystal Custom Vitreous Enamel Dial Cloisonné is an ancient technique for decorating metalwork objects in recent centuries using vitreous enamel Observation Caseback to view Movement Genuine Leather Strap Logo-Engraved Stainless Steel Clasp Luminous Hands Magnified Date Display 43mm Case Diameter 10 ATM Water Resistance