cuffie wireless px7 s2Premium wireless headphones with active noise cancellation The Bowers & Wilkins Px7 S2 are wireless over ear headphones designed to deliver a hi fi level listening experience on the go. They combine custom engineered 40mm drivers , Bluetooth aptX Adaptive , active noise cancellation (ANC) and premium materials for superior comfort and performance. The new design is thinner and lighter than the previous generation, with ergonomic earcups and a headband