Solar Powered & Auto On/Off: Solar energy supply, no extra utility electric cost, and no need to replace the battery. Light sensor controls the solar string lights auto on at dark and auto off at daytime. 2 Switches & 2 Different Modes: This solar string lights have On/Off button and mode button, press mode button selects 2 different modes to satisfy your diverse needs. Waterproof & Memory Function: The fairy string lights can withstand all kind of weather(IP44), including heavy rain and snow, perfect for indoor and outdoor decorations. Build in Memory chip save your last modes setting and no need to reset mode every day. Easy to Install: Solar panel with ground stake, 12M long string is perfect for wrapping around a tree or wherever you like to light your gardens, patio, lawn, porch, gate, yard, etc. The wire between the first LED light and the solar panel (lead cable) is around 12M so you can put the panel in a suitable place. Widely Application: The fairy string lights is a great choice for Christmas, wedding, holiday, garden, yard, lawn, Fence, Porch, Tree, Roof, Deck and so on.