The Sony MDR-ZX770BT/B Full-Size Bluetooth Stereo Headset provides wireless playback along with the ability to take calls hands-free. It is Bluetooth 4.0 compatible, and also features NFC tap-pairing with compatible devices. For audio quality, the headphones have AAC and aptX codec support, along with Sony's Beat Response Control for accentuated bass response. The built-in rechargeable battery provides up to 17 hours of playback before needing to be charged.

• This Certified Refurbished product is tested and certified by the manufacturer or by a third-party refurbisher to look and work like new, with limited to no signs of wear. The refurbishing process includes functionality testing, inspection, reconditioning and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic white or brown box.

This Certified Refurbished product is tested and certified by the manufacturer or by a third-party refurbisher to look and work like new, with limited to no signs of wear. The refurbishing process includes functionality testing, inspection, reconditioning and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic white or brown box.Sony