USB Chargable Coomatec Solar Fairy Christmas String Lights Multi Color for Outdoor with 200 LED, Solar charge LED String and USB Power bank charge both 66ft 200 Leds solar fairy lights have 4 colors to choice. Working mode:press the mode switch transform a flashing mode.you can set as your enjoy Solar powered panel with rechargeable batteries installed Automatic light up and automatically turn off the lights Ideal for creating that special magical mood for parties, porches, pergolas, ponds, trees, tents, walls, sheds and just about anywhere else you can think to use them