Get into the holiday spirit early and you are sure to have a Very Merry Christmas 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 up, they are weatherproof and will turn on at dusk and turn off in daylight. In day time they recharge with the solar panel and store until dark. Available in 100 bulb or 200 bulb length - you can string them together to make it as long as you need. Each string has its own power panel. The solar panel provides power for 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. 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.