Garmin Alpha T 20

Garmin is the go-to choice for sporting dogs because it works so well in remote areas far from cell tower range. High upfront costs, but a compelling choice for certain dog owners.
Pros and Cons
Pros
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Extremely accurate
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Excels in rural and remote areas
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Great for working & hunting dogs
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No annual plan
Cons
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Most expensive
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Requires separately purchased monitor
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Bulky