HUION L4S LED Light Box A4 Ultra-Thin USB PoweredEyesight-protected Technology - Ease your eye strain together with the protective film and eye-protective LED lamp; Only 5.1mm of thickness; Brightness: 1100 Lux; Illuminate Uniformity 745 cd/ m2.,Stepless Adjustable Brightness - Adjust the light freely with the touch sensitive button, simply a better way to find your ideal lighting; It will remember your favorable brightness last time of use.,USB POWERED - Comes with a USB cable, easily power your Huion L4S light pad from any Computer, Power Bank or USB Plug that connects directly into a wall outlet.,PORTABLE - Ultra Thin Design; Sleek design with a 12-by-8 inch work surface, light weight, only 0.60kg, portable carrying in a bag on the go or on a trip.,Wide Usage - Can be used for Negative Film Viewing, Artwork Tracing, Calligraphy, Scrapbooking, Tattoo Transferring, Sewing Projects, X-ray Film Viewing and more; One year warranty.Visit our store for more great deals!Thank you!