Huion Tracing Light Box (14"L x 10"W, Yellow Frame) 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 Suitable for 24hour lighting, Long life span 50,000 hours Go with color box, can be a gift to your friend, your family.