Vicvol Electronic Dog Repeller,Pet Dog Trainer with LED Flashlight, Ultrasonic Deterrent Device for Your Safety and Train Your Dog Ultrasound FunctionThis product is mainly used for ultrasonic dog driving equipment in outdoor environments to prevent attacks by dogs. When you encounter a dog that tries to attack you, you take out this "super-weapon" ultrasonic drive dog and launch ultrasonic waves to the dog. The ultrasonic wave 130dB to the dog ,the stimulation of hearing is big. LED Flashlight FunctionThe blinking of the super bright LED can also make the dog clear the source and position of the sound, so as to understand that the weapon in your hand is against it. The longer you stay in this position, the greater the damage to him, and the hurry to leave. Mode of Dog RepellerDo not press the switch for a long time due to strong power and large power consumption. Generally, press the switch for 3-5 seconds. Release the switch and press it again. Dog trainingSet the function switch below the product to the middle position and press the button on the top of the product to switch BEAM. NoteThis product emits strong ultrasonic power. Do not use it against the human ear.