Description: It has an asymmetric optical design, which only illuminates the table, not the screen, more eye protection. Space-saving breakthrough design is installed on the top of the monitor to save valuable space for your desk. Timed 1 hour to turn off. Dimmable for different needs to protect your eyes and giving you better office, study, gaming. USB powered, suitable for computer monitors with a thickness of 1-3cm. Made of high quality aluminium and ABS material- lightweight and solid; Clip design can be easily attached to your monitor. Specification: Material: ABS Size Chart: Size: 33x8.3x2.9cm/12.99x3.27x1.14inch Package Includes: 2 Pieces Computer Monitor Light 2 Pieces USB Cable 2 Pieces Manual Note: Conversion: 1inch=2.54cm, 1cm=0.393inch Please allow slightly 0-1cm difference due to manual measurement. Colors can appear different depending on light and how the listing is viewed. Thanks for your understanding and attention. Wish you a pleasant shopping experience!