LITENERGY Portable A4 Tracing LED Copy Board Light Box, Ultra-Thin Adjustable USB Power Artcraft LED Trace Light Pad for Tattoo Drawing, Streaming, Sketching, Animation, Stenciling EASY CARRYING -- Light weight super slim light pad, thickness only 0.2, about 5mm. Overall dimension including black frame is L14.2xW10.6xH0.2. The visual working area is 9x12. ADJUSTABLE BRIGHTNESS -- Simply keep pressing the touch switch for several seconds until you get the desired brightness you want. Its gradual dimming effect. EYESIGHT-PROTECTIVE DESIGN -- Light box with energy efficient flicker-free LED lamps, provides a perfectly even illustrated surface. USB POWERED -- tracer light box comes with 1pc USB power cable, you can easily connect to any computer, power bank or USB adaptor. Wide APPLICATION -- Ideal for stenciling, 2D animation, calligraphy, embrossing, scrapbooking, tattoo transferring, sketching & drawing, streaming, sewing projects, stained glass, quilting etc.