This is how you fix smart watches: cup your hand and place it over your ear. Can you hear your friend's voice in your cupped hand as concentrated sound hits it

This is how you fix smart watches: cup your hand and place it over your ear. Can you hear your friend's voice in your cupped hand as concentrated sound hits it from the smart watch's strap? Can you reply to a mic in the wrist strap? Did a call pick up when you made that gesture? No? Then you haven't made it simpler than pulling out a phone.