Feature 12in1 function design of sounder and highfrequency whistle. Press the heartshaped button by hand to make a big clattering sound 2Whistling with your mouth produces high-frequency sound with excellent penetration. This better ensures that it can be used in different environments 3The product adopt integrated design, solid and reliable, can be used for a long time 4Pressing can also make the sound of click or high frequency sound to train pets 52in1 pet training whistle can be used to train dogs to eat, or just to call dogsItem Type: Pet Training WhistleMaterial: PlasticSingle Size: Approx. 7 x 3cm / 2.8 x 1.2inSuitable Pet Type: DogProduct Function: Training dog to eat, or to call the dog .wang-edit-text{ font-family:'Arial' important; } .wang-edit-text table { border-top: 1px solid 000; border-left: 1px solid 000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid 000; border-right: 1px solid 000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Pink Whistle1 x Black Whistle1 x Blue Whistle1 x Orange Whistle1 x Light Blue WhistleNotePlease allow 1& 8209;2cm error due to manual measurement. Thanks for your understanding.