Dog Whistle

Dog Whistle with Ultrasonic HD sound. Great for dog training or keeping dogs away. Dog whistle is a type of whistle that emits sound in the ultrasonic range, which people cannot hear but dogs and cats can. It is used in the training of dogs and cats. The range of human hearing is different than a dog's. So this dog whistle's HD sound will attract the attention of all dogs around instantly.Dog whistle is producing sounds that dogs can hear from long distance and reacts instantly.How to use:1) Run the dog whistle app and listen. You will hear a disturbing sound. What you are hearing is only a secondary sound made by the air forced through the metal tubing; the actual whistle is inaudible to your ears.2) Adjust the whistle to your own dog. Even dogs can't hear all frequencies. Wait until he is asleep and gently blow on the dog whistle. Continue testing until your dog perks up. You will then know you have reached a frequency he can hear.3) Use the dog whistle with varying sequences to train your dog. For example, one long burst can mean "come," while a series of short, staccato bursts might mean "sit." Keep your whistle commands consistent and your dog will always know what you expect of him.4) Choose from a variety of sound types (This Dog whistler application contains several frequency: 7kHz, 10kHz, 15kHz, 19kHz.)