Huion Ultra-slim 23.62 Inches LED Tattoo Light Box with 5 PCS Tracing Papers The Whole Light Pad dimension including Black Frame is 19*14 Inches With Diagonal of 23.62 Inches. The Illuminated is 17.3*12.6 Inches With Diagonal of 21.46 Inches Touch Switch Design --- you only need to touch the pad to turn on / off your light box Adjustable Brightness --- simply press the touch switch for several second untill the brigness you want (From Bright to Dark) Memory Feature --- smart memory the brightness of your last use One A3 LED Light Pad, 5 Pieces Tracking paper for A3 Box