These warm white solar festoon lights feature 20 white bulbs that are powered by a solar panel. The bulbs are made from perspex and can therefore withstand rain and wind. Each light bulb consists of a warm white LED bulb inside, illuminating a warm white glow. Simply position your solar panel in a sun-drenched area of your garden, lawn or roof. The built-in daylight sensor means that they illuminate as darkness falls and charge when its daylight. There’s a handy ground stake included in the box which just slides on.