The Acme Dog Whistle Pro Trialler is the ultimate tool for training your pup. This powerful, easy-to-use device emits a loud, ultra-high-pitched whistle that carries farther than any human voice. It'll reach your dog across a field or even through walls, so you can be sure your pup will always hear your commands. And thanks to its ergonomic design, you can use the Acme Dog Whistle Pro Trialler with ease and comfort. Plus, it comes with a lanyard for quick and easy access. With its reliable performance and simple design, the Acme Dog Whistle Pro Trialler is the perfect choice for training your pup. Get one for your four-legged friend today!