[ name  say]: Ultrasonic bullet whistle

[ regulation  grid]: Flute length 8cm, chain length 39cm

[ material  quality]: Chrome plated copper

[ Heavy  quantity]: 40g( Simple plastic bag packaging)

[ Save  keep]: 1. Please keep the air outlet dry at all times. 2. Wipe off saliva and moisture with a dry cloth after use. 3. Avoid storing in humid places.

[ Kind tips]: Some people say that the sound of the dog whistle is not very loud, it is not as loud as a whistle.! In fact, dog whistles transmit sound through the principle of ultrasonic waves. Our dogs can receive sound waves of 120 kHz, while humans can hear at most 20 kHz. In addition to emitting tube-shaped sound waves that humans can hear, dog whistles In addition to the sound, the sound emitted at the same time is a frequency that cannot be heard by humans. Only dogs can hear it. Ultrasonic waves with this frequency can travel very far.~ Therefore, the dog whistle serves as a calling whistle for dogs and can easily recall the dogs.!!!

Spread signals over long distances
Our language and gestures take advantage of short distances or face to face, and we should give full play to the advantages of long-distance transmission of dog whistles. It is recommended that owners use dog whistles as "; Summon” It is more appropriate to use the dog whistle to call the dog back when the dog has wandered away, because the transmission distance of words and actions is limited.

For its safety· you need a dog whistle

I sincerely recommend that parents equip themselves with a dog whistle and train to call their dogs, only to blow it one day so that the dogs can find their way home. It’s not meant to be sensational, it’s really necessary.!