12285 MUSIC STAND LIGHT Unique music stand light which operates with 3, 6 or 9 batteries or rechargeable batteries. 9 batteries provide up to 24 hours of light. Designed for indoor and outdoor use. High- efficiency electronic lighting system. The light can also be used with an a/c adapter. Batteries and power unit are sold separately. Screw-on clamp adjustable up to 20 mm.