Watch Specification Model:SD1970J Movement: Japan NH35 automatic, 41 hours of energy storage. Case material:316L stainless steel Case back: 316L stainless steel Bezel: 120 click unidirect rotational ceramicbezel Watch mirror: sapphire crystalwith AR coating. Water resistance: 200 m /20 ATM Luminous: Fulldial lume,Swiss C3 green and BGW9 blue super luminous. Crown: Screwdown Crown Case back:Screwback Case Buckle: Upgraded 6 micro adjustment milled clasp Watch Dimension Case diameter:43.8mm(withoutcrown) Case length: 46.8mm(lug to lug) Case thickness: 13.5mm Lug width: 20mm Our service Warranty:2 years Returns policy:30-day return and refund, Style: automatic watch, dive watch, luxury watch Package: watch, box,warranty card, user manual