Key Features for the Way Systems MTT-1510 . Compact Mobile Printer   The S40 Mobile Printer features a clamshell design which allows paper to be simply dropped into place, helping eliminate paper jams. Also there are no cords to plug into the terminal since data is transferred using wireless infrared technology. S40 Mobile Printer .  Pocket Size Design    Only 4 inches tall and a little over 2.5 inched wide, the WAY Systems MTT is just a little larger than a cell phone, but has the functionalities of an advanced wireless credit card terminal. MTT-1510 Terminal