316L Surgical-Quality Stainless Steel Case Accurate Swiss Ronda 515 Quartz Movement Non-Glare Scratch-Resistant Mineral Crystal Logo-Engraved Stainless Steel Caseback Unidirectional Bezel Screw-Down Crown Rubber Strap Logo-Engraved Stainless Steel Clasp Luminous Hands Luminous Markers Date Display 45mm Case Diameter 20 ATM Water Resistance (Professional Deep Diving Approved)