NantoninFull Color Changing 603 LED Swimming Pool Light with 1.5m Cable Chord 12V 33W LED Underwater Swimming Pool Light Fountain Lamp Pond Light RGB 5 Colour Fully waterproof, resin filled to prevent any water intrusion Preprogrammed colors and color patterns at a flip of a switch This is a 12 volt bulb. Please make sure you have a 12 volt lighting system before you purchase this item or you can buy a 12V AC transformer to install. Output Power: 33W. This amazing color lighting effects intelligently mix green, red and blue LED to create a stunning array of color and continuously changing effects.You can change your swimming pool or pond into an incredible world.With this light, your pool or spa turns to be a magical underwater theater. LED light you can create an underwater array of color by replacing your spa or pool's ordinary incandescent light bulb