VIZIO"s 55" Class LCD HDTV with VIZIO Internet Apps puts the best of the web right on your TV screen, giving you the convenience of on-demand movies, TV shows, social networking, music, photos and more at the push of a button. with built-in WiFi (802.11n) for easy set-up, this HDTV also boasts 1080p Full HD and 120Hz refresh rate delivers superior picture and audio quality at an amazing value. This stylish HDTV delivers superior audio using SRS TruVolume and SRS TruSurroundHD for advanced virtual surround sound, and has four HDMI ports. This 55" also exceeds ENERGY STAR 4.1 Guidelines to reduce energy consumption and has built-in ambient light sensing technology, which automatically adjusts backlight levels to the brightness of its surroundings.