80" LED TV Backlight Bias Lighting for HDTV, Bright White, Kohree USB Powered LED Strip Accent Lighting Kit with ON/OFF Switch for Flat Screen TV LCD, Desktop PC Professional TV bias lighting/ backlight/ ambient lighting: Reduces eye fatigue, ease eye strain and increases perceived image clarity. White LED light strip (6000 Kelvin) with 3M adhesive backing. The TV backlight kit has a USB plug that allows it to be powered by your TVs USB port. Input: 5W (5V, 1A) Please check TV USB output prior to use. Size: The TV backlight Led Strip is 78.7 Inch (2m) long fits TV size up to 60 and can be cut at the thin cut lines to fit the size of your TV. USB power cable:2.8ft (85cm),inline switch Easy installation, Plug-and-Play: After briefly mapping your route and testing your light strip, simply wipe down the back of your TV, secure the TV light strip, and plug it in. The TV light strip has its own on/off switch, once turn it on, the light strip powers on and off with your TVs USB port. Please keep in mind that many new tv's USB is always on, then you might manually turn the switch off . Improve viewing experience: Looking at a bright screen in a dark room is hard on the eyes and, probably results in irritating eye strain. In a completely dark viewing environment, eyes are constricted and dilated accordingly, and colors as more washed out. TV ambient lighting is a simple and beautiful fix that keeps your eyes happy and makes the color on your TV look much more vibrant. One year warranty: friendly, easy-to-reach support. We stand strongly behind our Kohree LED TV lights.