State-of-the-art design and technology come together in the unbelievable sound of the SPI. Plug into an unparalleled wireless performance that will deliver sound on the go, wherever you go. SPI wireless headphones comes with Bluetooth 4.0 CSR technology, AptX and cutting edge components, delivers superior sound quality and power to move you. Its dynamic 8mm drivers pack a punch of true bass like no other, delivering a rhythmic response to even the most demanding tracks. With a wide frequency range of 20Hz-20 kHz, you’ll be hearing your favourite songs in a whole new light. So turn up the volume, plug in and tune out in style.