Watch Specification Brand: Watchdives Model: WD1967 Movement: Japan NH35 automatic, 41 hours of energy storage. Case material: 316L stainless steel Case back: 316L stainless steel Bezel: 120 Click unidirect rotational bezel Material: black is cermaic. Blue is glass. Watch mirror: bubble sapphire crystal with blue AR coating. Water resistance: 300 m / 30 ATM Luminous: Swiss BGW9 super luminous, blue night light. Crown: Screw-Down Case back: Screwback Case Bracelet: 316L Solid Stainless Steel, Brushed Front, Polished Side Bracelet. Clasp: new fly adjustable stretch buckle Watch Dimension Diameter 39mm in bezel Case diameter: 38mm(without crown) Case length: 45mm(lug to lug) Case thickness: 14mm(including glass) Lug width: 20mm Our service Warranty: 3 years Returns policy: Please check the website“Return / Exchange / Warranty Policy” Style: automatic watch, dive watch, luxury watch Package: watch, box, warranty card, Service: Support retail, wholesale. OEM/ODM. Please contact the seller if necessary.