Microsoft Surface Headphones 2 Black Noise Cancelling Bluetooth Wireless New
Bluetooth standard 4.1/4.2. Battery life: Up to 20 hours (playing music from Bluetooth, ANC on). Compatibility: Bluetooth 4.1/4.2. Up to 115 dB (1kHz, 0dBFS with Bluetooth connection). [Microphone] Noise canceling function (headset) Yes.