featureUnidirectional rotating bezelSmall secondsHelium escape valveMaster Chronometer CertifiedScrew-down crownUnidirectional rotating bezel??caseTotal product weight (approx.):????93 gBetween lugs:????20 mmThickness:????13.5 mmCase:????TitaniumCase diameter:????42 mmWater resistance:????30 bar (300 m/1000 ft)??Dial and CrystalDial color:????BrownMirror:????Domed, scratch-resistant sapphire crystal with anti-reflective treatment on the inside??braceletMaterial:????TitaniumClasp type:????Folding claspBuckle material:????Titanium