Features:Stainless Steel CaseNylon StrapAutomatic MovementCaliber: Seiko NH35Sapphire CrystalHelium ValveBlack DialAnalog DisplayLuminous Hands And MarkersDate DisplayRotating BezelScrew Down CrownEngraved CasebackBuckle Clasp1000M Water ResistanceApproximate Case Diameter: 45mmApproximate Case Thickness: 15mmApproximate Lug Width: 22mm