This 2 pack of colour changing solar garden lights create a beautiful coloured light in borders , paths, patios and driveways at night. Powered by a high quality solar panel these amazing multi coloured lights give over 4 distinct continuously changing colours throught the bubble effect acrylic stem in each light. During the day the solar panel inside of the crystallights converts the sunlight into electrical energy which is stored in the integral batteries, at dusk the light sensor automatically turns on the colour changing LED. This product is guaranteed for 1 year.