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Amazon.com : Dogtra ARC HANDSFREE Plus Boost and Lock, Remote Dog Training E-Collar, HANDSFREE Square for Discreet Control, Waterproof, Rechargeable, 3/4-Mile Range, 1 Dog Expandable System Medium, Large Dogs : Pet Supplies
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Amazon.com: Dogtra ARC 2-Dogs Remote Training Collar - 3/4 Mile Range, Waterproof, Rechargeable, Static Stimulation, Vibration, Audible Tone, Small, Medium, Large Dog Training E-Collar : Pet Supplies
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