The XtraFlex LED Music Light from Mighty Bright is an extremely flexible LED light for your music stand or low light situations backstage. It has a super LED which puts out as much light as 3 normal LEDs, and never needs to be replaced. The XtraFlex"s special lens spreads the light evenly so you have no hot spots, and gives you extra page coverage when used for reading sheet music on a music stand. The adjustable goosenecks mean you can direct the light right where you need it. It has the ability to be used self standing or clipped on to any surface. Mighty Bright XtraFlex includes 3 "AAA" batteries which should last you up to 40 hours.Batteries included (3 "AAA"") Extra battery lifeup to 40 hours Extra page coverage Extra lightweight Extra strong book clip grips almost anything or use free standing as a task light Special Lens spreads light evenly with no hot spots Easily bends to compact position for storage Bend arm to point in any direction at any time Uses super LED which bright as three regular LEDs and never needs replacing