Description FunctionWith this ultrasonic trainer, you can train your pet to obey, correct bad behavior and quit smoking. It can also be used to drive away aggressive dogs and avoid being bitten. Working principle: The ultrasonic energy of the product is about 125dB or 30cm, and the 2800mcd strong white light produces strong stimulation for dogs and cats (inaudible to human ears), causing unbearable annoyance and interference to animals. Small SizeLightweight and doesnt take up much space, so you can take it with you when jogging or walking, cycling, parks, etc. RangeThe working distance of the dog repeller is 5 meters, which is a very practical dog repeller. MaterialThe dog repeller is made of ABS, which is safe and not toxic. Product thrusters: 130(L) mm x 40(W) mm x 25(D) mm Effective dpension: 10 meters