The warm white 5MM LED Christmas lights come on a white wire with 70 bulbs per set and a set length of 23.33 feet. These dimmable lights only use 4.8 watts of power and may be used indoors or outdoors. Each LED bulb can last up to 50,000 hours and each set comes with a 90 day warranty. Each set of lights is Energy Star certified, UL listed, and full-wave rectified.