Features:Stainless Steel CaseCalf Leather StrapAutomatic MovementCaliber: 4R3924 JewelsDual-Curved Sapphire CrystalBlue DialAnalog DisplayOpen Heart Dial12/24 Hours DisplayPull Out CrownSee Through Case BackBuckle ClaspSplash ResistantApproximate Case Diameter: 41.8mmApproximate Case Thickness: 12.5mmApproximate Lug Width : 20mm