Feel every pound and bass lick wirelessly with the XB950B1. Designed to offer comfort and flexibility when you are listening to your favourite tracks, with Bluetooth built-in you can listen to the top-notch audio quality of these headphones cable-free. Great Sounds A large 40mm driver boasts a high energy neodymium magnet which perfectly balances power and precision to unleash an intense bass. What's more, an OFC voice call provides high power handling of 1500mW for a continuous punch. With a low end frequency range of 3Hz, Sony's EXTRA BASS tech reproduces pounding sub-bass systems which will have you rocking to the beat. Brilliant Bluetooth Say goodbye to cable clutter and feel the fantastic freedom of wireless listening with Bluetooth. Simply pair up your smart device to stream your favourite tracks without the wire. NFC devices link up with instant one-touch connection. Armed with a long-lasting battery, these headphones will keep going wirelessly for up to 18 hours, even with the Extra Bass turned on. And when they do finally run out of juice, simply recharge via USB, or plug in in traditional fashion with the included audio cable. Extreme Comfort Sporting a metal headband with a soft cushion and around-the-ear pads for a snug, comfortable fit, the XB950B1 can be worn for hours on end. The light but durable material gives a premium look and feel, while suppressing deep vibrations and punchy beats. The ultra-thick earpads seal in the sound by perfectly fitting around your ears. Not only is this pressure relieving but the earpads also keep the music in and keep distractions out. Better still, you can take your music anywhere. The sliding metal headband and swivel folding earcups make it easy to store your headphones in a suitcase or bag.