All dog breeds listen to commands here. Our high frequency whistle is perfect for repelling bad behavior and improving baseline conditions and - Successful dog training requires simple signals. The frequency of the dog whistle is standardized so that your four-legged friend can hear it from afar - Thanks to the high-quality lanyard, the whistle is comfortable to wear and always within reach< /p> Ä - no sharp edges or corners, light as a feather: Thanks to the pleasantly shaped mouthpiece of the high-frequency whistle, even frequent whistling does not become torture 2-piece set, black and orange