Orient Star Avant Garde Skeleton Series#RE-AV0A03B00BBlack Skeleton Dial100m Water ResistanceLeather StrapStainless Steel CaseSapphire CrystalAnalog DisplayAutomatic MovementCaliber F6F4424 JewelsAnti-Reflective Glass CoatingPower Reserve Indicator (50 Hours)Second-Hand Halt MechanismSee-Through CasebackScrew CasebackApproximate Case Diameter: 43.2mmApproximate Case Thickness: 13.7mm