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Amazon.com: Dogtra Pathfinder 9-Mile 21-Dog Expandable Waterproof Smartphone GPS Tracking & Training E-Collar with 2-Second Update Rate, No Subscription Fee, Free Satellite Map : Electronics
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Amazon.com: Dogtra Pathfinder TRX Additional Receiver 9-Mile 21-Dog Expandable Waterproof Smartphone GPS-Only Tracking Collar with 2-Second Update Rate, No Subscription Fee, Free Satellite Map : Pet Supplies
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Amazon.com: Dogtra Pathfinder Mini Additional Receiver in Black 4-Mile 21-Dog Expandable Waterproof Smartphone GPS Tracking & Training Mini E-Collar : Electronics
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Dogtra Pathfinder 2 TRX Additional Receiver Orange Dog GPS Tracker LED Light Blue Collar SmartWatch Compatible Rechargeable Waterproof Free Maps No Subscription No Monthly Fee Smartphone Required - Walmart.com
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