featureUnidirectional rotating bezelSmall secondsdateHelium escape valveMaster Chronometer CertifiedScrew-down crownTransparent case backUnidirectional rotating bezelcaseTotal product weight (approx.):????198 gBetween lugs:????20 mmThickness:????13.6 mmCase:????Stainless steelCase diameter:????42 mmWater resistance:????30 bar (300 m/1000 ft)??Dial and CrystalDial color:????GreenMirror:????Arched wear-resistant sapphire crystal, double-sided anti-reflective treatment??braceletMaterial:????SteelClasp Type:????Folding clasp with comfort setting and diver extension