🐶【How To Train Your Dog】: You can easily train your dog by adjusting different ultrasonic frequencies, such as stop barking, sit down, lie down, recall, go to toilet training and so on. Please maintain the consistency of the whistle command. When your dog is doing the right thing, give him a snack reward so that your dog can become a listening and obedient friend. | 🐶【Professional Whistle】: Easy to operate, you can loosen the sound adjustment screw and turn the adjustment lever to get the ultrasonic frequency you want. Pay attention to your dog's response to each setting until your dog shows the strongest response. This is a dog whistle that can stop the barking quickly. It can help you teach your dog to obey and learn basic skills. | 🐶【Safe and Durable】: Our dog whistle is made of safe, sturdy and durable stainless steel. The ultrasonic waves emitted by the dog whistle will not harm the dog’s hearing during training, nor will it cause any problems to the dog’s health. | 🐶【Anti-lost Design】: Our dog whistle is equipped with a black lanyard and a special locking nut and outer cover. It is very easy to wear on the neck, so that you can take it anywhere without worrying about losing it. | 🌈【Enjoy Happy Time】: Even if you can't see your pet, your pet can hear the dog whistle 25 meters away, preventing the dog from losing the best dog whistle tracker! This dog whistle is suitable for training all dog breeds. The training effect is best when the dog is 3 to 7 months old.