When smart glasses first came on the market, they weren’t very discreet. You could tell because someone looked like a cyborg. Even with the newer Google Glass you can see when someone has them on. They are far from fashionable and discrete. This might be the barrier smart glasses manufacturers need to get past to go mainstream for commercial use.
Of course, with time, technology always gets better and sleeker. LET VisionAI Glasses (still in prototype stage) is the latest set of SmartGlasses and looks the most fashionable in the smart glasses market. Although it doesn’t have a display system, which kind of puts it in its own category, it still has some amazing features. It essentially acts as a Bluetooth headset in the form of a pair of sunglasses, and integrates with Alexa, Siri or Google Now. Using these AI power voice recognition systems, you can connect it to any internet of things devices.
There are a variety of different styles to choose from:
https://www.indiegogo.com/projects/take-alexa-anywhere-with-ai-powered-let-glasses-audio#/