 All the new Book 9 models that are announced in 2014 include new features such as high current USB port for tablet charging, AptX codec for high quality audio transmission over Bluetooth, Dolby Virtual 5.1 surround sound effect and remote controllable audio port.The main design philosophy of ATIV Book 9 is "Thin & Light" and the design motive came from bent sheet of a paper to hint its thin and lightness.In order to make the product durable while maintaining the light weight, aerospace grade duralumin was chosen for enclosure.