Screen -Free & Flicker-Free - with clamp design and the asymmetrical light design, it only illuminates on the keyboard and desktop, eliminates the flicker and of typical desk on computer monitors.Space-Saving Aluminum Body - A space-saving breakthrough design, clamp onto the top of the monitor compared with desk , it saves 90% of desk space.Adjustable Brightness & 3 Color Temperature - Press Control, 3 levels of color temperature: warm light, mix light, white light. 5%-100% brightness step-less dimming. Warm light for reading, cool light for work efficiency.For 0.3 inch-0.8 inch inches Monitor Thickness - Compatible with flat monitor, Powered by your computer, wall charger, USB hub, etc. The USB power cord length is 5 feet(included).Easy to Set and Use - just clamp Tool-Free improving your viewing experience for your everyday computing tasks, perfect for watching videos, gaming, office working, reading, studying, design, etc.Rated output 5V,700mARated power 3.5W30 LEDs white light; 30 LEDs warm light30LM illumination levelAdjustable colour temperature 2900K-4200K-6000KColour:blackMaterial:Aluminum alloy + ABSPackage Contents:1 * Screen hanging light1 * USB-C charging cable 1.5m1 * English manualOnly the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.