Touch screen monitor led monitor hd monitor series iiyama prolite screen size 23 inches max resolution 1 920 x 1 080 pixel lcd technology ips response time 5 ms aspect ratio 169 contrast ratio dynamic 5 000 0001 contrast ratio typical 1 0001 brightness 250 cdm widescreen dot pitch 0 265 mm viewing angle 178178 display settings format adjustment horizontal frequency range 30 80 khz vertical frequency range 56 75 hz number of hdmi inp