Please note: The battery in our string lights is low when they leave the factory. It is recommended to fully charge it with solar energy or a USB stick after receiving the item before use to achieve an exceptional mood lighting effect! Solar powered. Automatic on/off: During the day, the solar panel can automatically charge enough to provide night lighting for the outdoor string lights. The string lights automatically turn on at dusk and automatically turn off at dawn. 8 lighting modes and memory function: This solar-powered outdoor light has 8 lighting modes to meet your different lighting needs. The rich and beautiful lighting modes include combination, firefly flashing, fading, swing, chasing, slow fading, twinkling, and steady on. Our solar-powered string lights with a built-in memory chip can save your last mode settings, so you don't have to reset the mode every day. IP44 Waterproof and durable: The solar-powered outdoor string lights can withstand all weather conditions. Rain, sun, or snow, let these decorative string lights create a romantic atmosphere in every corner of your home. Perfect decoration: The solar-powered outdoor string lights are easy to install and have a wide range of uses. These solar-powered string lights are the perfect decoration for patios, gardens, walls, trees, balconies, windows, hallways, bistros, backyards, weddings, parties, and more.