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. Custom Vitreous Enamel Dial Cloisonné is an ancient technique for decorating metalwork objects in recent centuries using vitreous enamel . Semi-Skeleton Dial. Observation Caseback to view Movement. Hinged Caseback Cover of Vitreous Enamel. Genuine Leather Crocodile-Embossed Strap. Logo-Engraved Stainless Steel Clasp. Luminous Hands. Day Sub-Dial. Date Sub-Dial. 44mm Diameter. 5 ATM Water Resistance.