316L Surgical-Quality Stainless Steel Case Jeweled Seiko NH35 Automatic Movement Jewel Bearings: 24 Jewels Sapphire-Coated Mineral Crystal Unique Abalone Dial Logo-Engraved Stainless Steel Caseback Uni-Directional Bezel Swiss Super Luminova Bezel Screw-Down Crown Crown Protector Case Design 316L Surgical-Quality Stainless Steel Bracelet Solid Logo-Engraved Stainless Steel Clasp Swiss Super Luminova Hands Swiss Super Luminova Markers Magnified Date Display 44mm Diameter 20ATM Water Resistance (Professional Deep Diving Approved)