The HD 4.50BTNC and HD 4.40BT closed back, around-ear headphones have been created for wireless listening on the move
With NoiseGard active noise cancellation technology, the HD 4.50BTNC takes ambient noise and filters it to the proprietary Sennheiser 32mm drivers.
Both the HD 4.50BTNC and HD 4.40BT use Bluetooth 4.0 and aptX.
Other features for both designs include NFC for simple pairing with compatible devices, battery life for wireless sound up to 25 hours while, with ANC enabled, the HD 4.50BTNC allows for up to 19 hours of wireless use.
Meanwhile, the HD 4.40BT includes an integrated microphone.
The new HD 4.40BT is priced at £170 and will be available from January 2017 while the HD 4.50BTNC £TBC will be available from February.
To lean more, click www.sennheiser.com