Product Description This product can stand on a desk like a regular table lamp, or it can be clipped to almost anywhere using the anti-slip clip and adjusted to any angle. It's portable, suitable for travel, and can be powered by batteries. Product Features -Material: ABS, electronic components, iron -Dimensions: 53.50 x 5.50 x 5.50 cm / 21.03 x 2.16 x 2.16 inches -Light Source: 28 LED beads -Battery: 3 AA batteries (not included) -Comfortable eye-friendly color temperature. -Simple design, gentle on the eyes. -Dual power supply: can be powered by batteries or USB plug. -This product does not have a power storage function. -A small and exquisite music lamp that not only illuminates your sheet music but also brightens your life. Package List: 1 x Sheet Music Stand Lamp, 1 x USB Data Cable