Our Solar Powered Wet Location ETL approved LED string light set is designed for year-round use, with sockets that create a waterproof seal around bulb bases. Each set consist of a 50 ft. 25 sockets spaced 1.64 ft. apart and a solar panel kit that can be staked into the ground or wall mounted, for location flexibility. The solar panel charges the included lithium-ion rechargeable battery during the day and powers the lights for up to 8-10 hours at night. This KOAOEIRS string lights' solar panel is equipped with dusk to dawn photocell, allowing automatically turn on lights at night and turn off to charge during the day (with a rechargeable battery). Each strand includes 25 energy efficient shatterproof LED filament bulbs (plus 1 spare). Each set powered by it's own dedicated solar panel, no more worry about circuit overload or cumbersome power cords stretching from plug to tree. It's your worry-free go to create a lighted oasis. These are ideal for patios, porches, walkways, restaurants and anywhere decorative and accent light is desired.