Heads-up displays (HUDs) are also used in goggles and helmets. Initially used in military aircraft to display avionics and instrument readings as well as gunsights in front of the pilot ...

Say no more! The Smart Swim 2 goggles come equipped with HeadCoach that’ll make your smartwatch jealous. This nifty bit of tech assesses your swimming style, picks out your flaws (don’t take it ...