Watch Specification Model: SD1962 Movement: Japan NH35 automatic, 41 hours of energy storage. Case material:316L stainless steel Case back: 316L stainless steel Bezel:120 Click unidirect rotational cermaric bezel Watch mirror: sapphire crystal with AR coating. Water resistance: 200 m /20 ATM Luminous: Swiss C3 green and BGW9 blue super luminous. Crown: Screw-Down Case back: Screwback Case Watch Dimension Case diameter: 41.9mm(without crown) Case length: 48.1mm(lug to lug) Case thickness: 15.6mm Lug width: 20mm Our service Warranty: 2 years Returns and Refund: 30 days return & refund service Package: watch, warranty card, user manual, plastic protecting box Style: men’s mechanical watch, men’s automatic watch, dive watch, luxury watch