-Light weight and can be carried with you.-The tracking light pad is a smooth light-emitting pad, and the light passing through the paper from the light tracking pad clearly illuminates the image, making it easy to track the image.-Touch switch design---You only need to touch the pad to turn on/off the light box.-Adjustable brightness-Press and hold the touch switch for a few seconds until the desired brightness is obtained.-Memory function-Intelligently remember the brightness you recently used.-Powered by USB cable, A2, A3 can easily access any USB port, such as computer, USB adapter or even mobile power. A1 can be used directly into the socket.specification:Size: A1, A2, A3Material: Acrylic light guide plateA1Size: 88CM *57.5CMLuminous area: 83.5CM * 53.5CMA2Size: 46.5CM*64.5CMLight-emitting area: 42CM*60CMA3Size: 34.5CM*46.5CMLight emitting area: 30*42CMDimming mode: stepless dimmingThickness: 8MMLight source: LEDPackage Included:1 X LED light pad1 X USB power cord1 X User Manual