Welcome back (or just welcome for your first timers) to Watch Video Rewind, or weekly Sunday feature where we point you toward various watch related videos available across the WWW.  June is here, and with the summer months comes longer days, nice weather, and months of outdoor activities.  I know I am getting into weekend warrior mode, and with the possibility of hiking and climbing, I thought I would poke around and look at GPS watches.

This first video is from Jeff Rizzo, who runs the RizKnows web site with reviews on all sorts of fitness gear.

If you want to get an overview of the GPS system that helps us figure out where we are, and how long and how far we went on that last adventure, check out the video above.

Wait, did they say the GPS satellites have atomic clocks in them?  Well, the last video is a short science class on how atomic clocks work.

That’s it for this week’s watch video rewind.  If you stumble across any interesting watch (or time) related videos out there, drop us a line. If we end up using it from your suggestion, we’ll be sure to tip our hats (electronically, if not literally) in your general direction.

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