General description An ultrasonic dog trainer that emits harsh ultrasonic waves that dogs dislike. It is designed to train pets to be obedient, correct inappropriate behavior, and stop excessive barking. The device is safe for both people and dogs, making it a humane option for dog training and repelling aggressive dogs. Technical specifications Emits ultrasonic waves that dogs find unpleasant Functions as a flashlight Equipped with a lanyard for easy portability Usage Train dogs to be obedient Correct inappropriate behavior Stop excessive barking Repel hostile dogs and prevent dangerous dog attacks while walking, jogging, or cycling Other information The device may not work effectively in certain situations: 1. With your own pets who know you won't harm them; 2. In noisy environments like busy streets; 3. When a dog is being protected by its owner; 4. With trained dogs familiar with such devices; 5. When battery voltage is low, resulting in low transmission power.