LEDNICEKER Solar Powered Light Decoration LED Lights String Electroplating Steel Hollow Heart Wedding Light Cool White Lighting for Christmas Party Wedding(15.6ft 20 LED) 4.75 meters long solar powered electroplating steel hollow heart LED lights string with 20 bright led bulbs, ideal decoration for gardens, patio, lawn, yard, porch, camper and all indoor and outdoor activities The solar panel charges the battery during the day by converting the solar energy and the sensor turns on the lights automatically at night, the angle of the solar panel can be adjusted for the direct sunlight 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 lights can stay on steadily or blinking at once by your favor 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 The covers are made of durable and lightweight electroplating steel, waterproof for outdoor use