Watch Specification Model:SD1970 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: Swiss C3 green and BGW9 blue super luminous. Crown: Screwdown Crown Case back:Screwback Case V2 clasp: 6 micro adjustment milled clasp. Note: For no logo dial version, it is still V1 3 hole adjustment stamped 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, Note: If you buy sterile dial version, it is sterile for dial, crown and case caseback