Taking the benefits of the Duet light even further, the Duet 2 LED music light has two cool-light, energy-efficient LEDs on 2 goosenecks. Precisely engineered optical grade lenses spread light evenly, and a switch per gooseneck gives you four possible light levels. Can be used as a clip-on light or stand freely and coils for compact storage. Batteries (not included) last up to 20 hours, and an AC adapter is included.