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Amazon.com: Educator E-Collar Humane Dog Training Collar with Remote, 100 Safe Tapping Stimulation Levels, Waterproof, Rechargeable, 1/2 Mile 1 Small-Medium Dog, Yellow : Pet Supplies
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ET-400-3/4 Mile Rechargeable Dog Trainer Ecollar with Remote for Medium and Large Dogs by E-Collar Technologies - Electric Vibration and Tone Stimulation Collar w/PetsTEK Training Clicke - Walmart.com
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Prong Collars, E-Collars and Clickers: Why These Training Tools Are Important | Highland Canine Training
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