Features:Adjustable BrightnessLight Box comes with a touch switch, which maintains the adjustable brightness of the light board. Once it’s connected to the power, you can adjust the light by simply touching the switch till you satisfied (Automatically Dimming Design, Smartly Memorize the brightness of your last use).USB PoweredSupply by USB cable which mean easy to access to any USB port like computer, USB adapter or even power bank. Brightness can reach 770cd/㎡, super bright LED lamps provides a perfectly even illuminated surface, brighter than size light box in the field.Super Slim and PortableWith a compact and elegant light box design, LED Light Tracing Pad brings Manufacturing technology to a whole new level. It is considered to be the thinnest Light Board in the field measuring only 0.31 inch of thickness. that is very light and portable.Eyesight-protected TechnologyTracing Light Box is designed for everyone whether you are an enthusiastic amateur or a professional. Eyesight-protected Technology is designed in it as we cannot care more about our user’s sensations. What's more, super bright LED lamps provide a perfectly even illuminated surface that’s perfect for scrapbooking, calligraphy, sewing, quilting, stenciling, and more.Accessories:1x Light Box1x USB Cord1x USB Adapter