30ct LED Multi-Color Bud Lights is a set of 30 red, green, blue, and yellow bulbs on a silver cord. Lights require 2 AA Batteries (not included) to operate and features an on/off and timer function that runs 8hrs on/16hrs off. Lights are intended for indoor use and they looks great on wreaths, mirrors, or draped over a shelf. Strand has four inches of space between each bulb and measures 4.5 feet in length.