The Luminox Navy SEAL features an impressive 45 mm CARBONOX™ case with a dive bezel and is water-resistant up to 200 meters, making it suitable for diving. Its blue dial with white numerals ensures excellent readability in daylight. At night, the reliable Luminox Light Technology takes over, providing self-powered illumination for up to 25 years with the "Always Visible" feature.- Swiss Quartz - Approximately 50 months battery life - Constant glow for up to 25 Years - 45mm Case Size - 14mm Case Thickness - Carbonox Case - Rubber Strap - Mineral Crystal - 200 Meters Water Resistant