Name: Ultrasonic dog whistle Specifications: Flute body 3.9 inches Bracelet: 9 inches Material: Brass Color: Silver Weight: 40.8g Suitable for: hunting dogs, work training pet dogs away from calling How to use: Loosen the sonic adjustment screw, while blowing air in from the air inlet, rotate the adjustment rod to adjust the appropriate syllable; after the adjustment rod is screwed, tighten the sonic adjustment screw. This dog training whistle is mainly designed with ultrasonic sound, the whistle made of brass material, which can make the product emit high-quality ultrasonic waves. Detailed introduction: The dog training flute can adjust the sound suitable for your dog according to your needs, so that the dog can read the owner's meaning according to the flute sound, and train the dog easily. E.g: d Don't move:------------Two short beeps Sit down:------------ one long and one short Come here:------------Two long tones When teaching the dog these actions, play the flute according to the regulations, and then teach him the corresponding actions, repeat the training, and when the flute starts, the dog will know what to do. Friendly reminder; when your dog has completed the instructions you gave, you should reward your dog with crispy biscuits or treats. After-sales service: If you have any questions, please contact us in time, we will help you solve it as soon as possible.