1Waterproof: Made of rugged aluminum alloy. Use on marine boat underwater.raining resistant, washing resistant, seawater splashing resistant, durable and pactical. 2_x005F_x000D_Longer Lifespan: High brightness, low power consumption, Long-lasting Life up to 50,000 Hours. 3_x005F_x000D_Easy to Install: 2 Wires Connection. Black is Negative and another is Positive. With a nut to mount them to your boat(Free nuts are included).Can be used above or below water level with through-wall mounting. 4_x005F_x000D_Wide Application: Fits all 12v boats ,cars and trucks, and trailers. Perfect for boat navigation lights, boat stern lights, decorate light, night light,deck lights, courtesy lights and boat interior lights on marine pontoon boat, dinghy, sailboat, kayak, bass boat, and so on. 5_x005F_x000D_Package: 2pcs LED Boat plug light; anti-collision, dustproof, waterproof, all-weather application.