When your dog or neighbor's dog keeps barking, gently blow the dog whistle, the ultrasonic frequency emitted by the dog whistle can easily attract the dog's attention and stop barking. Adjustable to various frequencies, including audible and silent modes, meeting different training needs for added flexibility. Dog whistle ​suitable for all dog breeds including (Labrador, Scottish, Golden Retriever, German Shepherd, Beagle). You can get in touch with your dog anytime. Ultrasound can travel up to 30 meters. After training, even if the dog is not in your field of vision, the dog can make corresponding actions (Sit, Paw, Lay Down, Up, Heal) according to your whistle. At any time use dog whistle to make dogs come to you, no need to shout. The dog whistles is made of 304 stainless steel. Ultrasound frequencies attract the attention of dogs without damaging their hearing and without any health problems.