WishWorld Outdoor Christmas Solar String Lights, 21ft 50LED Waterproof Blossom Flower Fairy Lights Decorative Lighting for Garden, Party, Patio, Lawn and Xmas Tree Decorations(Multi Color) Environment-friendly: Solar powered(2V/100mA solar panel) with built-in battery (600mA NI-MH). Light sensor tech: Lights up automatically at night for more than 8 hours when have enough sunlight during day. Easy to control: There are 2 buttons on solar panel, MODES and power ON/OFF. Waterproof(IP65) design: All of the parts are waterproof, suitable for most places. Wonderful decor: Amazing lights will create a wonderful atmosphere, perfect for outdoor, garden, Thanksgiving and Christmas decorations.