Since they aren't tethered to an outlet, these brighter-than-ever solar-powered string lights can be used virtually anywhere. Use them in your yard all year-round to light up a favorite tree, outline an arbor, or wrap a porch railing. Each string has 102 super-bright LED bulbs with built-in diffusers that last indefinitely. Day/night sensor turns them on automatically. Lights run 8 hours on a full charge. 36' L. "Go-anywhere" lights need no outlet Brighter than ever Year-round lighting for trees, arbors, railings 102 super-bright LED bulbs per string Approx. 8 hours running time on a full charge 36' L string 102 LED bulbs per string Each bulb is 1/8" x 1/4" Built-in diffusers last indefinitely Day/night sensor