JVC's around the ear noise canceling (NC) headphones with Bluetooth wireless technology (BT) are comfortable for long periods of use. They offer three selectable sound modes (Normal/Bass/Clear) and instant pairing with NFC technology. A rechargeable battery allows up to 16 hours with BT/NC in use, 27 hours with BT, and 35 hours with NC. Integrated remote and microphone for smartphones located on the headphone. Easy to carry swivel design. Includes carrying pouch and detachable cord for use on flight or with power turned off.