Features:Stainless Steel CaseBlack Silicone StrapAutomatic MovementCaliber: Seiko NH36Sapphire CrystalBlack DialAnalog DisplayHelium-Safe40 Hours Power ReserveLuminous Hands And MarkersDay And Date DisplayScrew Down CrownUni Directional Rotating BezelEngraved Caseback (With Image Of A Free Diver)Buckle Clasp1000M Water ResistanceApproximate Case Diameter: 47mmApproximate Case Thickness: 15mm