Description Luminox self-powered illumination Superluminova dial markings More Details Origin: Swiss Made Always Visible: Constant glow for up to 25 years Size of case (diameter): 44 mm Function: Time Date Water resistance (meters, feet, ATM): 200 / 660 / 20 Movement: Swiss Quartz Case material: 316L Stainless steel Bezel: Uni-directional rotating Case back: 316L Stainless steel screw in Crystal glass material: Sapphire crystal, anti-reflective coating Crown: Screw in, double security gasket, crown protected Strap / bracelet: 316L Stainless steel Lug width: 24 mm Case height: 12 mm Weight: 172 g