In daytime, when there is sunshine, connect the solar panel with led light bulb, the solar panel can convert the solar energy to electric energy and store it in the battery of solar led bulb. The charged bulb can be Our bulbs can be charged by solar panel or USB cable, and can keep lighting for 4-6 hours after fully charged. Perfect for home, camping, cooking, working, reading, sheds, chicken coops, emergencies, and blackouts. Fixed the solar panel in the outdoor with sufficient sunlight, and introduced the calbe into a room to connect the solar panel to light bulb.The remote control distance about 5m,it is convenient and flexible to conto Our bulbs are designed to withstand rain and other weather conditions, so you can use them outdoors without worry. Please note that the solar panel is rainproof, but the bulb is not waterproof. With a rechargeable battery, our bulbs can be used as moving lights for mountaineering, traveling, and expeditions. They're lightweight, energy-saving, and easy to carry.