The Mighty Bright Orchestra Light is the latest innovation from Mighty Bright. It features nine light-emitting diodes that can illuminate up to four pages of sheet music. Its rugged, solid state lighting technology lasts up to 100,000 hours. The light ispowered by three AA batteries or a long AC adapter cord (both included). The high setting gives 16 hours of battery life while the low setting gives 24 hours of battery life. The easy-access power switch on top controls the brightness level. The flexiblegooseneck allows accurate positioning, and an anti-glare shield on the back minimizes glare toward the audience. Approx 12 inches wide and 9 inches tall.