[Upgraded USB Powered & Solar Powered] -We provide both solar charging and USB charging options for you. Use the USB cable to charge to ensure the string lights work at any time. | [Energy Saving] - This led string lights no electricity cost and Eco-friendly without pollution. Recharged by solar panel. | [Easy To Use] - 2 switch: Power switch (keep the power switch ?ON? , the lights absorb sunlight daytime and lit up at night automatically), Mode switch (convert the working mode you want). | [Wide Application] - Waterproof lights can widely use in yard, home, garden, patio and Christmas to build wonderful ambience | [Specification] - 19.7ft length solar lights with 30pcs high quality LEDs crystal ball, 8 modes from steady to various flashing.