Solar Outdoor String Lights, collee 20ft 20 LED Water Drop Solar String Fairy Waterproof Lights, Solar Powered String lights for Home, Garden, Patio, Yard, Christmas Tree, Parties- multi Solar powered 4.8 meters long water drop modeling fairy lights string for gardens, patio, lawn, yard, porch, camper and all indoor and outdoor activities The solar panel charges the battery during day by converting solar energy and the sensor turns on the lights automatically at night The charging can only be finished under ON mode, please switch on the lights by pressing ON button at the back of solar panel before charging The lighting performance was decided by the volume of solar energy converted and stored, it may vary with the intensity of sunlight, geographic locations, weather conditions and shift of seasons There are 2 modes to choose from, the lights can stay on steadily or blinking at once by your favor