Garmin Astro 320 GPS Tracker for Sporting Dogs (Bundle, US)

I purchased this to replace a 200 model. It works just as well but not any better than the previous model in that you can always follow the arrows to find your dog but the compass seems to have trouble staying oriented to the north. I am needing to recalibrate often the so called 3rd axis where you can read it with it vertical is no better than the old one. All in all if you need a dog location device the Garmin Astros are the best on the market but save some money and get the previous model. If you are like me and had an older model the upgrade is not worth it wait for another upgrade.

http://www.lowcosttoday.com/garmin-astro-320-gps-tracker-for-sporting-dogs-bundle-us/