ITEM NAME:1X(A4 Light Box Tracer With Scale Ultra-Thin Usb Dimmable Brightness Led ArH4K3) 1X(A4 Light Box Tracer With Scale Ultra-Thin Usb Dimmable Brightness Led ArH4K3) 1X(Upgarded version light box with scale ; easier to trace and draw Eyesight-protected LED Technology: Three-speed dimmable ，this super bright, flicker-free, evenly distributed illumination pad is ultra-thin and light weight, only 3.5mm which makes it portable everywhere. No radiation, No harm for eyes even long-hour working. USB
