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.
Wireless headphones work by connecting, or pairing, with the device you want to use, through a radio or infrared signal. Many devices use Bluetooth technology to make connecting easier for the user. Devices with Bluetooth technology can connect and exchange data over very short distances using radio transmissions.