They're frames with a built-in camera, speakers and artificial intelligence that can be controlled with your voice, buttons and some simple gestures.

Meta’s grand innovation in the smart glasses space is concealment. Ray-Ban is one of the most iconic and ubiquitous sunglasses brands in the world. Its Wayfarer is so popular that it’s inspired countless knockoffs. A passing glance at a pair of Meta glasses doesn’t register alarm in people. Unless you’re looking closely, they’re just glasses.