Paipaitek Dog Training Collar for 3 Dogs, No Shock Dog Collar with Remote for Large Small Deaf Puppy Dogs,3300ft Range Vibrating Dog Collar,IPX7 WaterproofPaipaitek Dog Training Collar with Remote for 3 Dogs When the dog has bad behavior, the owner controls the collar with a remote to emit harmless buzzing and vibration signals to remind the dog. After a period of training, the dog eventually learns to associate bad behavior with the warning from the collar and follow your commands step by step, and best of all, it's completely pet friendly and harmless. No shock, no prongs, no more accidents Support up