1、Solar Underwater Lights: With ON OFF button on the back panel, the solar panel converts sunlight into electricity and stores it in the built in battery. It takes about 8 hours to fully charge, providing up to 20 hours of low brightness and 10 hours of high brightness. 2、IP68 Waterproof Rating: Fully sealed design allows long term immersion in water. You can easily install the spotlight vertically or horizontally underwater or on smooth surfaces with the included suction cup. 3、With Ground Stake: Adjustable light head and solar panel can be moved up and down as needed. The solar charger comes with a ground stake for fixing on fences or can be nailed into the ground. 4、4 Lighting Modes: Automatically switch colors (up to 12 beautiful mixed colors) or fix one color (red, green, or blue). Ideal for landscape spotlights, underwater pool lights, fountain water features, aquariums, waterfalls, fish tank lights, creating colorful underwater landscapes. 5、Auto On Off: No need to turn off the switch once it is turned on. Automatically turns off during the day and turns on at night, can be used as pond lights or for lawn and garden decoration lighting. Featuring 1W LED beads for brighter light and longer projection distance.