Sennheiser HD 4.50 BTNC Wireless Headband Headphones with Micro Full Size Bluetooth Wireless NFC Active Sound Cancellation Black. Sennheiser's HD 4.50BTNC wireless headphones introduce high-quality wireless sound for all-day listening on the go. These closed, circumaural headphones are the perfect companion for listening to music on your portable devices without cables. Active NoiseGart noise cancellation technology intelligently filters out ambient noise, while Bluetooth 4.0 and aptX support help bring you true Hi Fi sound with detailed acoustic performance. These headphones are also designed to be easy to use, so they contain features like NFC technology for hassle-free coupling, and controls for calls and songs intuitively positioned on the ear cups. With a battery that lasts for life, a high-quality sturdy frame, and a compact, foldable design for easy storage in the supplied case, the HD 4.50BTNC is the perfect companion for an active lifestyle on the go.
