Apexpower led shoelace (purple) Solar Powered: Environment friendly, No electricity cost, charge by sunlight. 8 Modes: Easy to use, turn on the lights and choose your favorite lights mode. Automatically: Keep the lights on, and it will light up automatically at dusk, turn off automatically at dawn. WATERPROOF IP65---Both for outdoor indoor use,protect the lights.suitable to any occasion(garden, patio, lawn, Christmas tree, party, wedding, holiday, home). MONEY SAVING& EXCELLENT PERFORMANCE---The solar string light is charged by sunlight, there is No electricity cost, no battery replacement. After fully charged, it can light for 8-12 hours, totally shinning a whole night.