Low Voltage System - This underwater light has a transformer built into the light fixture to drop the power from 110 to 12 volts. Adopting 2-in-1 parallel line design with 26 feet cord available for outlet connection. Never have to worry about batteries, just plug and go. App Control - The LED Pool Lights support APP control with millions of different colors or DIY your unique colors. Scan and download the App, connect the bulb to your phone, and you are ready to go. Simple operation, more modes and longer control distance than traditional remote control of pool lights. Colorful Lighting & Changing Effect - A variety of solid colors and dynamic colorful lights make your swimming pool and backyard more vibrant. Comes with a sensitive built-in mic in the controller, lights will pulsate and change colors along with the environmental sound and music. Enjoy different styles and atmospheres with your family and friend at night. IP68 Waterproof - The outdoor pool lighting kit uses PC material and fully filled with epoxy resin inside, which gives it resistance to cracks, heat and chemical corrosion. With IP68 waterproof and 50000 hours lifespan, no worry about maintenance and durability. Flexible Installation Allows for quick and versatile hanging or mounting to pool pole, ladder, fence. No drilling is required. The unique self-lock fittings allow you to adjust the bulb's height without lowering the water level in your pool. Two light is sufficient to illuminate the pool up to 25ft.