Touch screen monitor series iiyama prolite screen size 15 inches max resolution 1 024 x 768 pixel lcd technology tn response time 8 ms aspect ratio 43 contrast ratio typical 7001 brightness 350 cdm dot pitch 0 297 mm viewing angle 140125 horizontal frequency range 31 4 60 khz vertical frequency range 56 75 hz number of dvi inputs 1 number of vga inputs 1 usb 20 ports 1 synchronisation separate sync ergonomic properties tilt functio