Firefly Solar LED Christmas Lights on String. Get into the holiday spirit early and you are sure to have a Very Merry Christmas this year! Now you can do unlimited lighting and never have to worry about the light bill or trying to turn it off manually. The Firefly Solar lights are easy to set, they are weather proof and will turn on at dusk and turn off in daylight. In day time it will recharge its power from the Solar panel and store it till needed at night. Each String comes in combination of 100 bulbs or 200 bulbs and you can make it as long as you need it. Each string has its own power panel. The solar panel provides power from 12 to 15 hours depending on the sun light that stored the charge in the day time. It will also charge on a hazy day or in low light, just make sure the solar panel is properly exposed to the light. No outlet needed and no batteries required. All weather proof. Comes in Warm (Amber) White Light. Features: 100 LED bulbs on a wire that is 36 ft. long. 200 LED bulbs on a wire that is 66 ft. long. 2300 mAh rechargeable Lithium Battery. Solar panel with all-weather casing plus ground stick or panel hanging options. 2 Modes of lighting – Solid or Flashing and can also power off.