This Battery-Operated 10-Light USB Metal Unicorn Light Set from Kurt Adler is a great addition to your lighting collection. This set includes 10 unicorns with multi-color (red, green, blue and yellow) LED lights and a timer function. This set is powered by USB, has a 12-inch lead wire and a 19.68-inch USB lead wire and 6-inch light spacing. The set uses 3 "AA" batteries which are not included and has an automatic timer function of 6 hours on and 18 hours off.