【Professional Dog Training Whistle】 Dog Training Whistle is professionally designed, can output frequencies in 5.4kHz and 12.8kHz range when whistled. The whistle is audible to the human ear, but it is not loud. Dogs are able to hear these sounds because they are very sensitive to high frequencies. 【Safety and health first.】 The whistle is made of stainless steel and plastic. This is a safe material and a fine workmanship, it will not rust or fade. Its frequency range is perfectly safe for the dog’s ears, it will not cause any health problem for you or your beautiful dog. 【Fre Frequency adjustable】 Ultrasonic whistle can adjust frequencies by turning the black part. You can train your dog to listen to different commands in this way. perfect for poodle, border collie, hunting dog, german shepherd, bulldog, terrier, rottweiler, dachshund, huskie and other breed. And its small and light with two 2 free lanyards, easy to carry. 【Train your dog early】 Please note that your dog needs to be
