[Steplessly Brightness Adjustable & Memory Function] The Monitor screen Light Bar features stepless brightness adjustment and three types of color temperature. You may choose the desired light effect as per your needs.Memory function automatically remembers your last setting, no need to reset. [Space Saving] Monitor bar lamp dimensions: 40 cm x 9.1 cm x 3.8 cm (15.75 in x 3.58 in x 1.49 in). You can directly mount the lamp to the computer monitor, so it wont take up any space on your desk. [Touch Control] Our computer light utilizes touch control. You can slide the bar to adjust the brightness, which is easy and convenient to use. [Eye-care Reading Light] Effectively reduces the blue rays received by our eyes. Our computer office light has an asymmetrical optical design that only illuminates the desk and ensures zero reflective glare off the screen. [USB Powered & Long Lasting ] The screen light bar can be powered by a computer, wall charger, and other USB devices, easy setup and use. Our 40cm e-reading led task monitor lamp has a great touch and is built for business people to help you work more efficiently and comfortably.