Overview SD1968is a slightly unusual watch because it is monoblock (without a case back) meaning that the movement is encased from the dial side ensuring great protection and the 300m water-resistance. Watch Specification Model:SD1968 Movement: Japan NH35 automatic, 41 hours of energy storage. Case material:316L stainless steel Case back: 316L stainless steel Bezel:60Clickunidirect rotationalceramic bezel Watch mirror: sapphire crystalwith AR coating. Water resistance: 1000m = 100 ATM Luminous: Swiss BGW9 blue super luminous. Crown: Screw-Down Case back: Monoblock Case Watch Dimension Case diameter:44mm(without crown) Case length: 50.7mm(lug to lug) Case thickness: 17.2mm 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, user manual