Features:Stainless Steel CaseNylon StrapSolar MovementCaliber: V192Curved Sapphire CrystalBlack DialAnalog DisplayTachymeter ScaleChronograph FunctionPower Reserve Up to 6 Months12/24 Hours DisplayLuminous Hands And MarkersDate DisplayScrewed Case BackBuckle Clasp100M Water ResistanceApproximate Case Diameter: 41.40 mmApproximate Case Thickness: 13.00 mmApproximate Lug Width: 21.00 mm