WYZworks LED Solar String Lights - 11m (60 Warm White LED) - Christmas Xmas Wedding Tree Party Garden Waterproof Light Solar powered, no electric wiring needed, storing solar energy during the day, and lighting up automatically at night. 2 lighting modes to choose from: Static on & Flashing pulse light. Waterproof, perfect for both indoor and outdoor decorating along with; Christmas, Parties, and/or any special events. Automatic sensor will turn on in dark / dim conditions once turned on. Can continuously work for about 8 hours after fully charged. Ground spike (20cm) to easily fix to your garden / yard.