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Amazon.com: Dogtra Edge RT Electronic Dog Remote Training Collar for Medium and Large Dogs - Up to a 1-Mile Range, Great for Hunting, Fully Waterproof, Rechargeable, Pager Vibration, 8 Levels of Stimulation :
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Amazon.com: Dogtra Edge RT Black Additional Receiver Long Range High-Output 1-Mile Waterproof 3-Dog Expandable Remote Dog Training E-Collar with Combination Boost Control for Professionals : Pet Supplies
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