Features:Stainless Steel CaseGenuine Leather StrapAutomatic MovementCaliber: Seiko NH38APower Reserve Up To 40 HoursSapphire CrystalFull Luminous Dial With Logo "RATIO"Analog DisplayScrew Down Engraved CrownEngraved Case Back (With Image Of A Skysurfer)Engraved Buckle and Clasp200m Water ResistanceApproximate Case Diameter: 38mm