Features:Stainless Steel CaseLeather StrapAutomatic MovementCaliber: F6B2422 JewelsSun & Moon PhaseSapphire CrystalWhite DialAnalog DisplayPower ReserveDay And Date DisplaySee Through Case BackBuckle Clasp50m Water ResistanceApproximate Case Diameter: 42mmApproximate Case Thickness: 14mmApproximate Lug Width: 21mmAlternate Model Numbers: RA-AK0310S, RA-AK0310S10B, RA-AK0310S30B