9 LED provides lighting, suitable for lighting music score to play the piano or other musical instrument.2 ways to power: battery setting or plug the USB cable. flexible to fit different states. Clips base the lamp firmly fixed the lamp, save space and keep the lamp safe.Protective piece on the mouth clip can actually avoid abrasion on things like .Switch on the top of the lamp can adjust the light levels to your different needs.LED: 9Battery (not included): 3 * AA, DC 3.2-5VBrightness: 9 * 9LMColor temperature: 6000-6500KRated Power: 0.9WColor : BlackMaterial: PlasticItem Size: 20.8 * 9.4 * 29.0cm / 1.7 * 3.1 * 9.1in (L * W * H)List of packages:1 * musical score lamp1 * USB power cableNote: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.