The soundscience HDTV bias lighting makes it easy to outfit your home theater with professional backlighting. Features: * Adds a subtle white backlight to your HDTV, reducing the eye strain caused by differences in picture brightness from scene to scene in movies, TV shows, and video games * USB powered * Unit dimensions: cable: 51.1-in., light strip: 55.1-in. What"s In The Box: * Antec Accent Lighting HDTV Bias Lighting Kit