【Solar Powered】Money-saving， this solar festoon lights don’t need an outdoor outlet or disposable batteries. Perfect for outdoor decorations.;【USB Rechargeable】On rainy or cloudy days， you can take off the solar panel from the string lights and recharge it indoors (USB cable not included).;【4 Lighting Modes】One always-on and 3 flashing modes (flash slowly， flash rapidly， intermittent flashes). Press the “mode” button on the back of the solar panel to choose mode.;【Auto On/Off】Built-in Light sensor will turn this garden string lights on automatically at night and turn if off during the day.;【Safe &Energy Saving】3V Low-voltage LED bulbs with overall power of 3W， very low energy consumption. Doesn’t get hot， safe to touch and use outdoors.