Stainless Steel Case Stainless Steel Bracelet Automatic Movement Caliber: Seiko NH36 Sapphire Crystal White Dial With Logo 'RATIO' Analog Display Helium-Safe 40 Hours Power Reserve Luminous Hands And Markers Day And Date Display Screw Down Crown Engraved Caseback (With Image Of A Free Diver) Deployment Clasp 1000M Water Resistance Approximate Case Diameter: 46mm Approximate Case Thickness: 15mm