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.
filter results. QuietComfortÂ® 25 Acoustic Noise CancellingÂ® headphones give you crisp, powerful sound â and quiet that lets you hear your music better. Bose advances their industry-leading headphones with the latest proprietary BoseÂ® Active EQ and TriPortÂ® technology, giving the music you love deep, clear sound.