DescriptionAdd legendary Sennheiser sound into your daily routine with the brand new closed-back Sennheiser HD 4.50 BTNC headset. This is a headset designed for audiophiles with an active lifestyle. Featuring stunning Sennheiser sound and the latest wireless tech, crafted with the highest-quality designs in a minimal yet robust design. Plus, with Sennheiser's patented NoiseGard™ active noise cancellation, you can enjoy your music in peace everywhere you go. Music lovers demand an elite sound experience on the go and Sennheiser delivers with stunning, high-definition sound in the supremely practical and portable HD 4.50 BTNC.