316L Stainless Steel Case Black Silicone Strap Quartz Movement Caliber: Seiko VX42E Sapphire Crystal With Anti-Reflective Coating White Dial With Logo 'RATIO' Analog Display Stainless Steel Bezel With Black Ceramic Inlay Helium Safe Valve Luminous Hands And Markers Date Display Stainless Steel Screw Down Crown Stainless Steel Solid Screwed Case Back Engraved Case Back With Image Of A Free Diver Stainless Steel Buckle Clasp 1000M Water Resistance Approximate Case Diameter (Without Crown): 46.00 mm Approximate Case Diameter (With Crown): 49.00 mm Approximate Case Thickness: 12.85 mm Approximate Lug Width: 22.00 mm