Feel every pound & bass lick wirelessly & free from distraction with the MDRXB950N1. Designed to offer comfort & 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. & with Digital Noise Cancelling, shut out exterior distractions so it's just you & the music for a more immersive experience. A large 40mm driver boasts a high energy neodymium magnet which perfectly balances power & precision to unleash an intense bass. What's more, an OFC voice call provides high power handling of 1500m W for a continuous punch. With a low end frequency range of 3 Hz, Sony's EXTRA BASS tech reproduces pounding sub-bass systems which will have you rocking to the beat. Say goodbye to cable clutter & 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 22 hours, even with the Extra Bass & Noise Cancelling turned on. & when they do finally run out of juice, simply recharge via USB (Universal Serial Bus), or plug in in traditional fashion with the included audio cable.