Warm Light Book Reading Light LEPOWER LED Music Stand Light/USB and Battery Operated/Clip on and Portable Lights for Piano, Travel, E-reader & Bed Headboard Clip on or free standing: Brighten up with the click of a button and adjustable arm/arms, place your book light for best viewing. USB and battery operated: Power your music stand light by AAA batteries (Not Included) or a USB is provided. Convenient: It is convenient to carry the book light with when travelling, night-time reading. Multifunctional: Perfect for music stands, Pianos, orchestra pits, books, craft tables (DIY) e-Reader, tablet covers (like Kindle, iPad), magazines, or computers. LEPOWER extends a Free one-year product limited warranty to our customers. 60 days money back guarantee for quality problem.