Sony MDR-XB650BT Extra Bass Bluetooth Wireless Sans Fil Headphones, Black Description: Condition: New in Box Features: Feel the beat with these Sony EXTRA BASS Bluetooth headphones. With Bass Booster technology, these headphones are tailored for dance music. They feature an acoustically tight seal for sound isolation. These EXTRA BASS Bluetooth headphones support wireless connectivity with Bluetooth and NFC one-touch listening and let you to listen to up to 30 hours of music before recharging the batteries. Over-the-ear design FOR A SECURE FI