... equivalent to glass,7 Mohs *Dust-proof, ... ratio: 4:3/16:9For 15,17inch screen, Max ... resolution:1280x1024,Brightness: 260cd/m2 ,Contrast: 450:1 Size and Brand are optional Powerful PC ... trackball.*WIFI, GPRS,3G Modem*Web-Camera,* Thermal /Laser ... -spray,1.5-2.0MM steel ... Working environment: temperature +0-+40, relative humidity ... high quality information kiosk/touch screen kiosk /computer kiosk