Noise cancelling microphone delivers clear, high-fidelity sound during hands-free voice callsAll-day battery life: 40 hours talk time or 44 hours music playbackBluetooth 5.3 wireless connectivityBluetooth profile: A2DP / AVRCP / HFP / HSP270-degree rotatable microphone with mute buttonDual-device connection for using two Bluetooth devices simultaneouslyMemory foam ear pads and adjustable headband3.5mm audio input