Specifications: Working voltage: USB 5V Rated power: 2.8W Overall dimensions: 235 x 335mm Light-emitting size: 235 x 305mm Product thickness: 4mm Features: Easy carrying:Light weight super slim light pad, thickness only 0.16, about 4mm. Overall dimension including black frame is L13.2xW9.25xH0.16. Adjustable brightness:Simply keep pressing the touch switch for several seconds until you get the desired brightness you want. Its gradual dimming effect.Flicker-Free super bright long last Led light.Touch sensor Switch Design , turn on/off and brightness control easily just by touch. Eyesight protective design:Light box with energy efficient flicker-free LED lamps, provides a perfectly even illustrated surface. USB powered:Comes with a USB cable, easily power the light box from any Computer, Power Bank or USB Plug that connects directly into a wall outlet.Working Voltage: DC 5V,Rate Power: 2.8W. Wide application:Ideal for stenciling, 2D animation, calligraphy, embrossing, scrapbooking, tattoo transferring, sketching & drawing, streaming, sewing projects, stained glass, quilting etc. Package includes: 1 X A4 led light box 1 X USB Cable