Features:Stainless Steel CaseLeather StrapAutomatic MovementCaliber: 8220031 JewelsSapphire CrystalSilver DialAnalog DisplayPower Reserve Up to 60 HoursScrew Down CrownSee Through Case BackBuckle Clasp30M Water ResistanceApproximate Case Diameter: 40.00 mmApproximate Case Thickness: 12.30 mm