Watch Specification Model:SD1975XT Movement: Japan NH35 automatic, 41 hours of energy storage. Case material:316L stainless steel, PVD plating Case back: 316L stainless steel Bezel: 120 click unidirect rotationalceramic bezel Watch mirror: sapphire crystalwith AR coating. Water resistance: 300m /30 ATM Luminous: Swiss super luminous. Red, Orange and Blue Crown: Screwdown Crown Case back:Screwback Case Watch Dimension Case diameter:47.5mm(withoutcrown) Case length: 44mm(lug to lug) Case thickness: 15mm Lug width: 22mm 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