These unique bubble lights will shine brightly in your tree. The bulb shines in the base lighting up the bubbling support! When the lights start to bubble the silver glitter inside of the bubbler moves around and glistens with the light. It can be used on your Christmas tree or outside in your bushes. Details: Clear 2" x 4.5" 7ft. cable Includes incandescent C7 bulb Incandescent For indoor use only