LED SopoTek Solar strip Christmas string Lights 4.8m 20LED 2 Modes Solar Light String Crystal Water Drop Solar Fairy String Lights for Outdoor, Gardens, Homes, Wedding, Christmas Party, Waterproof (20LED Blue) 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 open the lights by pressing ON button at the back of solar panel before charging the lights 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