The latest Leatherback Sea Turtle watches feature a 45mm CARBONOX case, case back, and bezel. With a water resistance of 10 ATM, this dive watch, which comes with a PU strap and stainless-steel buckle, is designed for both maritime and terrestrial use. It also includes Luminox Light Technology, ensuring visibility in all lighting conditions for up to 25 years.- Swiss Quartz - Approximately 50 months battery life - Constant glow for up to 25 Years - 45mm Case Size - 12mm Case Thickness - Carbonox Case - Polyurethane Strap - Mineral Crystal - 100 Meters Water Resistant