ultrasound Dog Bark Control Whistle,Dogs Training flute The product is shipped based on the color or size of the main image of the product page. [Product name]: Adjustable pet training dog whistle[Product Material]: Copper[Product size]: 5.3CM, diameter 6mm[Product introduction]: The dog flute is one of the most useful gadgets used to recall dogs. It is a completely different product from the flute we play. The dog whistle emits a kind of ultrasound that is not easily detectable by human ears but is very obvious for dogs. Because the ears of dogs can receive sound waves of 120 kHz, while people can hear 20 kHz at most. In addition to the tubular sound that can be heard by humans, the dog whistle also emits sounds that cannot be heard by humans. Only dogs can hear the frequency. Ultrasound at this frequency can travel far away, so dogs can travel far away. Somewhere to hear this sound. The dog whistle made by using this speciality of the dog can easily call back the dog that has run away after chasing the prey.[How to use]: Loosen the sonic adjustment screw. While blowing air in from the air inlet, rotate the adjusting rod. After the adjusting rod is screwed, tighten the sonic adjustment screw. Note that the pitch mentioned here is not the loud sound, but the sensitive sound of your dog. This point can only be obtained by normal observation [Training method]: Use different flute methods to specify commands such as "don't move", "sit down", and "come over".E.g:"Don't move"--------- Two short tones"Sit down"--------- one long and one short"Come here"--------- two long beepsWhen teaching the dog these movements, play the flute according to the rules, and then teach him to do the corresponding movements; repeat the training, and wait for the flute to play, the dog will know what to do.Reminder: When your dog completes the action you specify, use the corresponding dog snack as a reward, and the training effect will be better