The tablet itself is 19.5" diagonal. Everything will come in the same package it was originally purchased in. Comes with the digital pen, HDMI cable, USB cable, power adaptor, power cable, adjustable stand, pen charging cable, pen holder, and user manual. Box will also include 4 small black screws and 2 longer gray screws, those screws are needed to put together the stand that allows the tablet to sit upright, instructions for putting the stand together and attaching to the back of the drawing tablet should be depicted on the back of the tablet itself.