Description: Quality LED beads: The music stand light comes with quality LED beads, providing soft lights, healthy for the eyes. Dimmable: The clip-on lamp features adjustable brightness, perfectly fitting different environments, meeting different demands. Portable: The book lamp is compact and lightweight, easy to carry in the handbag, suitable for camping, rehearsal, practice, travel, and more. Easy operation: The clamp light is powered by a USB cable and you can also install batteries when the USB power source is not available. Wide applications: The clip-on light is suitable for music sheet stands, office desks, student tables, laptops, bookshelves, etc, convenient to install and remove with the clamp. Specification: Material: ABS. Size: Light Head: Approx. 21x3.5x3cm/ 8.26x1.37x1.18 inch. Overall Size: Approx. 21x40x6.5cm/ 8.26x15.74x2.55 inch. Power Supply: 3 * AA Batteries (Not Included) or USB Cable. Bead Quantity: 9 Pieces. Note: There might be a few color distortions due to different computer resolutions. There might be a slight error due to different hand measurements. Package Includes: 1 Piece Clamp Light (with 1 Piece USB Cable).