... , no handwriting delay, no lag3. Provide built-in and external schemes4. Hight light Transmission over 95%5 ... 315WOperation SystermSupport Windows XP,vista,windows 73,Provide built-in and external two different scheme, easily satisfy different ... -proof,glare-proof;6,Easy calibration,Easy maintenance.7 ,long life time, long-term free maintenance;8 ... inside and outside environment workable. 32" LCD Monitor