Vender PICTYOUU 2PCS Removable Pet Training Whistle Key Ring Dog Trainer Dog Flute Pet Toy Pet Supplies Ultrasound Adjustable Dog Whistle al mejor precio

<div><p>Features: The sound level can be adjusted, and the dog can be trained using ultrasound Weight: 15g Size: 0.9*8.0cm Colour: Black Material: metal Package Include:2PCS Pet Training Whistle Principle of dog whistle: The dog whistle transmits sound through the principle of high-frequency sound. Our dogs can receive sound waves of 120 kHz, while people can hear at most 20 kHz. This is the gap! Therefore, the sound of the dog whistle is not easy to detect by the human ear, but the dog is very sensitive.</p></div>