Watch Specification Model: SD1975V Movement: Japan NH35 automatic, 41 hours of energy storage. Case material: 316L stainless steel Case back: 316L stainless steel Bezel: 120 click unidirect rotational ceramic bezel Watch mirror: sapphire crystal with AR coating. Water resistance: 300m / 30 ATM Luminous: Swiss C3 green and BGW9 blue and orangesuper luminous. Crown: Screwdown Crown Case back: Screwback Case Watch Dimension Case diameter: 47.5mm ( without crown) 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