With integrated wireless Bluetooth-aptX technology, you can listen to your music to your heart"s content from any source, leaving you completely free to move around as you wish. This system, has been designed to take you right into the heart of your favourite pieces.?Compact but high-performance, XS Book can also become an active solution around a flat panel, or bring quality sound into a small room once connected to a music player. And since decoration rhymes with integration, Focal XS Book Wireless is available in a black high gloss piano lacquer to fit into every interior.