Worlds smallest GPS watch
Casio is back 
Do you remember the 80ies? Unthinkable without digital watches from Casio. And now they are back with 21century technology: GPS. Of course within a watch – what is a remarkable tiny system for GPS. The watch is called GPR-100.
But what is it good for because you're not a car? For runner:
The GPR-100 is the result of Casio's ongoing development efforts, boasting an ultracompact GPS antenna (19mm in length), compact, high-performance GPS module (12mm x 11mm) containing the u-Nav GPS solution. The GPR-100 displays distance, speed, and pace data in real time on the run. It also displays the exact time anywhere in the world automatically using satellite data.
Via MarketWire
The tiny GPS maker: u-Nav Microelectronics
within a watch – what is a remarkable tiny system for GPS. The watch is called GPR-100.