Bose A20 Aviation Headset with Bluetooth Dual Plug Cable, Black 30% greater active noise reduction than conventional aviation headsets. Connectivity Technology: Wired/Wireless 30% less clamping force than conventional aviation headsets. The ergonomic control module includes an auxiliary audio input with intercom/AUX priority switching, ideal for dedicated GPS and traffic warning systems Clear audio with active equalization. Simple, intuitive headset operationplug it in, turn it on, go flying Now with Bluetooth audio and communications interface for connectivity with your communications and navigation devices Customizable audio prioritization control lets you mute an audio signal when receiving a communication, or mix the two together