This is the Trident Divemaster Underwater Xenon Strobe Light 130 ft Dept. Waterproof to 50 meters. Continuous flashing for 8 hours. Visible for 2 miles (On clear night). Velcro arm strap included. Takes 1.5v, C type alkaline battery. The SL15 Strobe Light is a good choice for boaters and divers. It's also a useful light to have in the trunk of your car for that unexpected nighttime breakdown.
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