Bowers & Wilkins introduces its first true wireless headphones and they have been engineered by the same team behind their highly coveted 800 Series Diamond loudspeakers. The first of the two models introduces is the PI7, a model with Adaptive Noise Cancellation that uses three microphones, 24-bit processing, and Dual Hybrid Drive units in each earbud for the best sound possible. It also features a Smartcase that not only charges your phone but can also act as a wireless transmitter so you can plug into virtually any headphone jack and transmit that sound right to your earbuds. Battery life is rated at up to 4 hours with an additional 16 hours from the charging case. The PI5 mode is slightly less powerful but still offers noise cancellation and up to 4.5 hours of battery life and an extra 20 hours from its charging case.