The Mighty Bright XtraFlex Duet Super L.E.D. Music Light uses two specially-designed heads that spread light evenly, without any annoying hot spot to washout print and make your music hard to read. The twin, highly flexable arms are easy to position to put light in tight places, and they also make it very easy to fold the unit into a small package for easy storage. The Mighty Bright XtraFlex Duet is equipped with a base that allows the light to be used as either a clip on or as a freestanding unit. This versatility makes the XtraFlex Duet perfect for lighting things other than music- racks, pedal setups on dimly lit stages and mixing boards will all benefit. Powered by three AAA batteries (not included).