These crisp cool white solar festoon lights feature 20 LED perspex bulbs that is powered by a solar panel. Each light bulb is white with a cool white LED bulb inside. Given they are solar powered these lights will be the most eco friendly and cost efficient lights you use to decorate your outdoor area. The solar panel is attached to a 2m lead wire. Simply position your solar panel in a sun-drenched area of your garden, lawn or roof. There’s a handy ground stake included in the box which just slides on.