HeadRush HRC 5021 Compact On-Ear Wireless Noise Cancelling Headphones offer a seamless wireless experience with Bluetooth 4.1+EDR connectivity and support for simultaneous pairing with two devices. Enjoy crystal-clear audio and calls with active noise cancellation, a built-in microphone, and intuitive controls for volume, track selection, and answering calls. The headphones provide up to 20 hours of talk time and 500 hours of standby time on a single charge, making them perfect for extended use.