Dog Beeper, Exclusive private model! product features: The product built-in inductor, equipped with magnetic switch. Built-in buzzer, can produce 8 different "BIB" sounds, set this product on the dog`s neck, when the dog move fast, the product will emit a short "BIB" sound,when the dog move slow or doesn`t move, means the dog has been found the prey, then the product will emit urgent and continuous "BIB" sounds. For example: "BIB" for one sound represent first dog."BIB" For two consecutive sound represent the second dog, and so on, the hunter can control 8 dogs at the same time.