There's no shortage of great sound to enjoy when you've got the Sennheiser HD 450BT Bluetooth headphones. These comfy wireless headphones are driven by Bluetooth 5.0 technology and feature top-quality codecs to deliver rich audio with deep dynamic bass. With active noise cancellation, you can focus on your music or podcasts anytime, anywhere. | Sennheiser HD 450BT Over-Ear Noise Cancelling Bluetooth Headphones - Black