Due to this high prevalence, vertebral artery hypoplasia (VAH) has not yet been considered an independent risk factor for ischemic stroke [1,2].
How to use your own headphones on Americanâs new 777-300ER. Passengers traveling in First and Business Class on Americanâs new 777-300ER are provided with Bose QuietComfort 15 Acoustic Noise Canceling headphones to use during the flight.
Connecting to a single output jack. Pivot the movable plug so that it snaps in place against the adapter body. Plug the headphone cord into the adapter and insert it into the single output jack. The dual-plug adapter lowers the volume levels of strong audio output signals that are common on airline systems.