"Enhance the home viewing and gaming experience with next-gen surround lighting, with the Philips Hue Play Gradient Light Tube. It flawlessly blends multiple colours of light that react to the contents of the TV screen, for immersive, full-room entertainment. It can be placed freely around your entertainment system to upgrade the experience, and add a whole new dimension of lighting. The Light Tube Compact, at 87.7cm length, is ideal for TVs 40"" to 55”. It requires the Hue Bridge and the Hue Sync box in order to work, which are available separately. Seamless surrounding colour This single LED Tube generates seamlessly changing colour to match the on-screen content, for a colourfully immersive experience throughout the entire room. Hue Sync Box and Hue Bridge Required It requires the Philips Hue Bridge, the Philips Hue Play HDMI Sync Box, and the Hue Sync mobile app on your smart device. The Bridge allows you to add up to 50 lights and accessories throughout the home, create timers and routines, and control your lights from anywhere with the Hue app. The Philips Hue Play HDMI sync box and Hue Bridge are sold separately."