featureUnidirectional rotating bezelSmall secondsdateMaster Chronometer CertifiedScrew-down crownTime zone functionTransparent case back??caseTotal product weight (approx.):????94 gBetween lugs:????20 mmThickness:????13.2 mmCase:????Stainless steelCase diameter:????41 mmWater resistance:????15 bar (150 m / 500 ft)??Dial and CrystalDial color:????GreyMirror:????Arched wear-resistant sapphire crystal, double-sided anti-reflective treatment??tapeStrap type:????leather strapStrap color:????blueStrap surface:????Alligator leatherClasp type:????Folding claspBuckle material:????stainless steel