LED Navigation Light: LED boat light buoy is designed to ensure safe navigation and provide signal instructions Light Effect: Single color twinkling, it will automatically extinguishes when in and dark, and turn off when the light is strong Waterproof: IP65 waterproof, it can do many kinds of working on the water and used even in heavy rain, blizzards and other severe weather Material: The light is made of high quality LED light, and PP PPS plastic sheel, and it is powered by 2pcs D batteries(not included), which can last for about 50 days Application: Applied in maritime rescuing, highway repairs, field surveys, navigation warnings, fishing net auxiliary lights, etc.