Note:  Battery not include!!!  Description  Easy to Operate,train all Kinds of Dogs such as that are Used as Pets, in Police and for Shepherding.  Material:Plastic  Color:Yellow Black  Size:130*26*40mm  Weight:64g  Note:  1.Compare your detail size, please allow 1-3MM to be different due to manual measurements.  2.Please note that due to light and the screen, a slight color difference should be acceptable.  Packing:1 pcs Anti Barking Training Device 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.