VIZIO M421NV 42-Inch 1080p Edge Lit Razor LED LCD HDTV 42-inch LCD HDTV with Full HD 1080p resolution and VIZIO Razor LED backlighting Energy efficient, mercury-free LED backlighting for vivid color and contrast 120Hz refresh rate for more clarity during fast-motion video Built-in ambient light sensor adjusts backlight levels based on surroundings One Year Parts & Labor Free Lifetime Technical Support