The PG-300 Pager Only 1 Dog System is a reliable and effective pet training aid. With a range of 1/2-mile, this system allows you to communicate with your dog or even your cat. It is designed to fit all sizes and breeds, making it versatile and suitable for any pet. The pager feature provides a gentle and effective way to train your pet, ensuring they understand your commands. Whether you have a small dog or a large cat, the PG-300 Pager Only 1 Dog System is the perfect tool for training and communication.