This Acme Thunderer Professional Dog Whistle Model 558 in black is the perfect tool for training and obedience for your furry friend. Made of durable plastic, this whistle is designed to produce a loud, clear sound that can be heard from a distance. It is suitable for all dog breeds and is easy to use. The unit type is a single unit, and the country/region of manufacture is unknown. This whistle is an essential item for any pet owner who wants to ensure their dog's safety and security. It is ideal for use during training and obedience exercises and is guaranteed to get your dog's attention. Order now and enjoy the benefits of this high-quality whistle.