This new 9-LED light is the brightest, most efficient and versatile music stand light on the market, illuminating up to four pages of sheet music. Sturdy, proprietary spring clip provides solid and simple attachment to music stands. Solid state LEDs never require replacement, and power switch enables 2 levels of brightness. Flexible gooseneck allows for precise adjustment. Powered by an AC adapter with extra long power cord or three AA batteries (both included).