Watch Specification Brand: Watchdives Model: WD1680Q Movement: Japan Miyota 2115 quartz movement Battery: SR626SW Case material: 316L stainless steel Case back: 316L stainless steel Dial: enmal black dial Bezel: 120 Click unidirect rotational ceramic bezel Watch mirror: sapphire crystal with AR coating. Water resistance: 300 m / 30 ATM Luminous: Swiss C3 super luminous, green light for Date vesion. Swiss BGW9 blue luminous for no-date version. Crown: Screw-Down Case back: Screwback Case Clasp: Folding Clasp With Safety. 6 micro adjustment milled clasp. Watch Dimension Case diameter: 41mm(without crown) Case length: 48mm(lug to lug) Case thickness: 13.5mm 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.