Acer S231HL bid 23" Widescreen LED Monitor 23-inch Acer S231HL bid 1080p Widescreen LED LCD Monitor General Features: Black color 23-inch widescreen LCD display LED backlit technology 1920 x 1080 resolution 16:9 aspect ratio 0.265 mm pixel pitch 250 cd/m2 brightness 12,000,000:1 Dynamic contrast ratio 5 ms response time 170 horizontal viewing angle 160 vertical viewing angle 16.7 million color support 60 Hz refresh rate