Christian I demoed one and decided not to even carry it in the product line up... Very limited details and graphics. No maps, old graphics platform. I do like the built in E Collar feature and the design of the GPS collar itself. Range was ok, saw 2.3 miles one time on the standard antenna. Designed more for upland hunting type hounds. The price is alot more to. There is a new system out called border patrol. Pretty neat, but still no where as advanced and cost effective as the Astro.

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