• Easy training with ultrasonic whistle for commands like sit, come, and stop barking. • Anti-loss whistle with free strap, made of high-quality stainless steel. • Scientific training tool that positively transforms dogs. • Works with all breeds, ideal for working dogs. • Absolutely safe, does not harm the dog's hearing. • Improves communication and bond with the pet. • Designed to facilitate the teaching of basic and advanced commands. • Promotes desirable behaviors and strengthens the dog's confidence.