Along with 1000:1 contrast ratio for image clarity and crispness, 17 and 19 in. monitors as well as 21 in. widescreen monitor provide VGA, Composite, SVHS, and audio inputs. HDMI input, also included, allows Hi-Res connection to DVRs and NVRs, while mains input negates requirement for additional 12 V DC PSU. Other features include plastic protection for screen panel and 5 mS refresh rate that reduces blurring of fast-moving objects.