https://www.cnbc.com/2017/09/20/amazon-working-on-first-wearables-to-interact-with-alexa.html >Amazon is working on its first wearable device: a pair of "smart glasses" that would allow its virtual assistant Alexa to be summoned any time, anywhere, according to people familiar with its plans. >The device, which would tether wirelessly to a smartphone, is designed to look like a regular pair of spectacles so that it could be worn comfortably and unobtrusively, the people said. A bone-conduction audio system would allow the wearer to hear Alexa without having to insert headphones into their ears.