Microsoft Surface Headphones 2 QXL-00007 Light Gray Noise Cancellation Bluetooth
Bluetooth standard 4.1/4.2. Battery life: Up to 20 hours (playing music via Bluetooth with ANC on). Compatibility: Bluetooth 4.1/4.2. Microphone noise cancellation function. Up to 115 dB (1 kHz, 0 dBFS via Bluetooth connection).