LED light (with 4 LEDs) for sheet music stands. Fully adjustable, flexible arms allow to conveniently position light beam over music desk. Ingeniously designed clamp allows for connection of the lamp to any music stand or table top surface up to 1″ (25 mm) thick. This versatile, compact lamp can also be used as a reading, camping or workshop light, and is the perfect solution to illuminate your laptop. Designed with latest LED technology, this lamp can be powered either with 3 batteries (AAA) or with USB DC power cable, both of which are included with the lamp. Optional AC power adapter, model RPNT11 Power supply is also available.