The new closed-back Sennheiser HD 4.50 BTNC headset delivers
everything required by a music aficionado with an active
lifestyle. There’s the stunning Sennheiser sound and the latest
wireless technology, all crafted in an elegantly minimal yet
robust design, made from the highest-quality materials. But most
of all, Sennheiser’s NoiseGard™ active noise cancellation lets
you enjoy your music in peace – everywhere.