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.
Headphone Jack Types. The headphones that came with your MP3 player probably don't fit into the audio ports on a stereo system or an old mobile phone. Headphones and the devices you connect them to use three standard analog connection sizes: 1/4-inch (6.35mm), 1/8-inch (3.5mm) and 3/32-inch (2.5mm).