DESC: The 42-inch SV421XVT 1080p LCD HDTV from Vizio. It offers a stunning resolution of up to 1920x1080 and response time of 4 ms to deliver sharp clarity with crisp and clear imagery. The scanning backlight technology gives this television a 240 Hz refresh rate while combining the advanced 120 Hz technology that ensures a smooth pictures with rich detail. Additionally, the dynamic contrast ratio of 50,000:1 allows for deeper blacks and brighter whites. The SRS® TruSurround HD(TM) technology creates a high quality surround sound experience while providing optimum bass performance, high frequency clarification and dialog clarity.