Enjoy complete wireless freedom with these Sony WI-XB400 EXTRA BASS Headphones. These Sony WI-XB400 in-ear headphones offer freedom from wires , without compromising on quality. Designed to enhance low-end frequencies for exceptional bass, they also maintain vocal clarity and sound quality with 9mm drivers . Offering up to 15 hours of playback when fully charged, you can listen on your commute, in the office and even after work too! Each earbud comes with a built-in magnet for tangle-free transport and storage, while a built-in microphone on the neck band means there’s no need to even remove your phone from your pocket when you need to take a call. You can use the buttons to play, stop and skip tracks and adjust the volume on your Sony XB400 earphones. Battery Life (in hrs): 15 Bluetooth: Y Dongle Required: N Noise Cancellation: N Wifi Enabled: N EXTRA BASSâ„¢ signature sound with 12mm driver unit Enjoy up to 15 hours of non-stop music Magnetic earbuds for easy cable management