M&T TECH Solar Outdoor Christmas Decorative Lights, 55.8ft 100 LED String Lights for Yard, Garden, Christmas Tree, Lawn, Patio, Wedding, Party and Holiday Decorations (White) String length: Approx 17M Total led lamp beads: 100 2 different modes : Flash and Steady on Swicth ON the button before charging Solar powered panel with rechargeable batteries installed