EASY CARRYING -- Light weight super slim light pad, thickness only 0.158’’, about 4mm. Overall dimension including frame is L12.6’’xW9.05’’xH0.158’’. The visual working area is A4. ADJUSTABLE BRIGHTNESS -- The light pad is STEPLESS adjustable, simply keep pressing the touch switch for several seconds until you get the desired brightness you want. It’s gradual dimming effect. The light with energy efficient flicker-free LED lamps, provides a perfectly even illustrated surface. USB POWERED -- The tracer light box comes with 1pc USB power cable, you can use this USB cable to connect the light pad to any 5VDC output device, such as computer, power bank or the adapter. Wide APPLICATION -- Ideal for weeding vinyl, viewing slides, stenciling, 2D animation, calligraphy, embrossing, scrapbooking, tattoo transferring, sketching & drawing, streaming, sewing projects, stained glass, quilting stencils, film negative etc. SERVICE: If you have any questions regarding with the light table, please contact us and we will reply you within 24 hours.