Please pay attention: you need install the 9V battery. also, The following conditions do not drive dogs well: 1. The dog you own, because it knows that the owner will not hurt it; 2. Noisy environment, such as downtown or roadside; 3. Dogs with the owner-dog-dominant; trained large dogs-well-trained; 4. When the battery voltage is too low-the transmit power is low. The above situation will not affect the use of this product, because your own dog, dogs who often shop, dogs with the owner and well-trained dogs will not bite randomly; Note: Do not deliberately tease the dog with the dog drive, because it is not surprising that the dog listens more.
