The Sea Bass, with its all-black design, features a striking 44mm CARBONOX™ case and offers water resistance up to 100 meters. Its all-black dial is equipped with the reliable Luminox Light Technology, providing "Always Visible" illumination that is self-powered and lasts for up to 25 years. - Swiss Quartz - Approximately 50 Months Battery Life - Constant glow for up to 25 Years - 44mm Case Size - 12mm Case Thickness - CARBONOX™ Case - Polyurethane Strap - Mineral Crystal - 100 Meters Water Resistant