Perfect for low-light or no-light situations, the Luminox Men's Navy SEAL Colormark watch glows 100 times brighter than other luminous watches, which allows for easier visibility. This timepiece This versatile timepiece is constructed with a 48-millimeter polyurethane case and matching durable polyurethane band, which includes a buckle clasp with safety mechanism. Vibrant blue Arabic numerals contrast with the classic black dial, while smaller blue numerals mark the 24-hour clock. In addition, a handy date calendar rests at the three o'clock position, and the unidirectional, textured, polyurethane bezel features striking blue minute indexes for easy readability. Powered by analog-quartz movement and protected by a durable mineral dial window, this watch is preferred by US Navy SEALs and US Air Force Pilots, and is water resistant to a depth of 660 feet.