Pizza presses have heated upper and lower platens that gently heat the dough while flattening it. The heat is not intended to cook the dough, simply allow it to flow more easily. The presses have adjustable thickness controls that allow you to select whether you want thin crust, deep dish or anywhere in between.
Some important specifications to look at are the overall size of the unit and how it is operated. The dimensions will indicate how much countertop or table space the unit will take up. Be sure there is also enough overhead clearance for the handle, if there is one. Presses can be either manually operated with a pull down handle, or they can operate automatically with a simple push of a button.