Blue IP68 Waterproof Rate 9 LED 27W Brightness Underwater Light Boat Drain Plug Light With 1800 180&deg; Viewing Angle For Fishing & Swimming Remark: Lights are for underwater use only; do not operate it out of water Single LED 3W with 9 LED insides, total 27W super brightness. Titanic Aluminum Alloy housing materials 100% anti-corrosion Easily replace the existing 1/2. Install for both small or large boat with DC8-28V built-in driver 180Viewing angle, Luminous Flux1800Lm Simply screw into the 1/2. Note: please do not tighten the screws too hard in order to not damage the wires inside and result in short out Packing includes: 1* Drain Plug light 1* protective tube PS: In case that you did not receive manual, please contact the customer service and they will be pleased to help you out