Unlike smartphones that come in many different sizes, the selection of tablets is pretty much limited to devices measuring between 7 and 10 inches. Not a very ample choice, to be honest. Someone thought that it was time to provide customers with more alternatives. That someone was Panasonic with its 20-inch monster of a tablet, the ToughPad 4K UT-MB5. The device was introduces at CES in January this year, creating quite a stir among those who were able to see it up close.