316L Surgical-Quality Stainless Steel CaseJeweled Miyota 8215 Automatic MovementJewel Bearings - 21 Jewels36-Hour Power ReserveBeats per Hour (BPH) - 21600/HourSapphire-Coated Mineral CrystalObservation Caseback to view MovementUni-Directional Bezel316L Surgical-Quality Stainless Steel BraceletLogo-Engraved Fold-Over Push-Button Deployment ClaspLuminous HandsDate Display40mm Case Diameter10 ATM Water Resistance