The device, designed like a regular pair of spectacles, will allow Amazon's digital assistant Alexa to be summoned anytime at all places.

There would be a bone-conduction audio system in the device to allow the wearer to hear Alexa without inserting headphones into his or her ears, according to the report.

Earlier this year, Alphabet Inc re-introduced its own wearable glass headset, Google Glass, after discontinuing its production last year. However we are yet to see anything appear on the marketplace outside the Google glass developer product.