Watch SpecificationModel: SD1934TMovement: Japan NH35 automatic, 41 hours of energy storage.Case material:316L stainless steelCase back: 316L stainless steelBezel: stainleel steel bezelWatch mirror: sapphire crystalwith AR coating.Water resistance: 200 m /20 ATMLuminous: Swiss BGW9 blue super luminous.Crown: Screwdown CrownCase back:Screwback CaseBuckle: Upgraded 6 micro adjustment milled claspWatch DimensionCase diameter:39mm ( without crown)Case thickness: 13mmLug width: 20mmOur serviceWarranty: 2yearsReturns policy:Please check the websiteReturn / Exchange / Warranty PolicyStyle: automatic watch, dive watch, luxury watchPackage: watch, box,warranty card, user manualService: Support retail, wholesale. OEM/ODM.Please contact the seller if necessary.