316L Surgical-Quality Stainless Steel Case, Accurate Japanese NH35 Quartz Movement (±0.5 sec/day), Non-glare Scratch-resistant Mineral Crystal, Luminous Hour Markers and Hands, Screw-down Unidirectional Bezel, Logo-engraved Steel Caseback, Date Display window, Blue Dial, 42mm case diameter, Water resistant to 20 ATM.