Mighty Bright- Mighty Bright Orchestra Light features 9 bright white LED's rated for 100 000 hours capable of lighting 4 full pages of sheet music. Specifically designed to be discreet its built in back fin directs light away from theaudience. It has a sliding power switch with two brightness levels and its cushioned extra-strong clip provides a secure grip on music stands. Powered by (3) AAA batteries (included) with a battery life of 14 hours or ACpower adapter (not included). Includes a durable travel case as well. Also compatible with our UK and EURO adapters for use abroad. IDEAL FOR: musicians DJs and engineers; in the studio on the road and during performances.