Sennheiser has announced a trinity of Bluetooth wireless headphones. The first is the HD 4.50 BTNC Wireless. It has a full size, closed back circumaural foldable headphone design with wireless Bluetooth audio, active noise cancellation, NFC pairing, aptX support, external controls, and 19 hour battery life with noise cancellation enabled (25 hours with it disabled). The HD 4.40 BT Wireless is mostly the same but without the active noise cancellation and folding design. HD 4.50 BTNC Wireless • HD 4.40 BT Wireless Lastly, there is the Momentum In-Ear Wireless, which...
Source: http://www.gsmarena.com/sennheiser_announces_three_new_bluetooth_headphones_at_ces-news-22576.php
