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.Specification:Material: PP PPS PlasticLighting: Single Color TwinklingBattery: 2x D Battery (not included)Battery Life: About 50 daysWaterproof Rate: IP65Working: automatically flashing in darkLight Source: LEDWeight: 100gSize Chart:48x260MM/1.89x10.24inchPackage Includes:1 Piece Navigation LightNote:1. Please allow slightly error due to manual measurement.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.3. Wish you a wonderful online shopping!