1.Size:60" to 120" , customer tailor size are welcome 2.Series:f3331 3.Aspect ratio: 4:3, 16:9, 16:10 4.Technology:infrared 5.Touch accuracy:full screen area coverage with typicalfa1mm 6.Projection display rate:4:3 16:9 16:10 7.Resolution:400ppi(>4096f¯4096 pixel) 8.Transmission speed:12m/s 9.Touch method:gloved hand, pen or any other pointer. 10.Touch pressure:no activation pressure 11.Response time:continuous 5ms 12.The surface material:pvc 13.Shore hardness:fn60 14.Cleaning method:washable 15.Power supply:usb power only 16.Interface:usb1.1/2.0 17.Electricity consumption:fn70ma (usb direct power) 18.Operation voltage:dc5v 19.Windows:windows98/me/2000/nt/xp/vista32 20.Scanning speed:first point 25ms, consecutive point 8ms 21.Cursor speed: 180 points/s 22.Working temperature: -20f¦ to 70f¦ 23.Working humidity: -40f¦ to 85f¦ 24.Storage humidity: 0% to 95% non-condensing 25.Storage humidity: 0% to 95% non-condensing 26.Digital education class: optional 27.Touch screen surport system software free systems integrators surpport 28.Warranty:5 years 29.Certification:fcc , ce , rohs