... Touch Screen: 1. 4, 6, 10, 16 and 32 touch points simultaneously; 2. Available Sizes: 18.5", 19 ... " 22'', 24'',27'',32'',40'',42'',46'',47'',50'',52'',55'',60'',65'', ... touch activation force is requiredMinimum Touch Object2.5 mm X 2.5 mmVandal-proofNo break by 1-pound ... ApprovalsCE, FCC, RohsOperating SystemOperation System : Windows 7 32" Multi touch Screen overlay Frame