Recon Jet review: expensive fitness glasses with potential to be better
 

Recon Jet is a sports computer for long-distance runners and cyclists that's embedded into a pair of sunglasses. Take it on a long, lung-bursting trip and you'll get your speed, cadence and calories, as well as a variety of other stats -- all present...

http://www.engadget.com/2015/07/17/r...=rss_truncated