24" Elo ET2420L DVI/HDMI Blu-ray 1080p Widescreen Touchscreen LCD Monitor w/USB & HDCP Support (Black) - NO BASE 24-inch Elo ET2420L Touchscreen LCD Monitor General Features: Black color 24-inch touchscreen LCD display 1920 x 1200 @ 60 Hz optimal resolution 16:10 aspect ratio 1000:1 contrast ratio 300 cd/m2 brightness for LCD panel 250 cd/m brightness for IntelliTouch 6 ms response time 178 horizontal and 178 vertical viewing angles 16.7 million color support 31 - 81 kHz horizontal input frequency