Ultrasound Drive - Ultrasound is safe and harmless to the human body. At the same time, it is chemical-free and hazardous. This will only chase the animals instead of harming them. Humanized design will not harm your cat, dog or other pets Smart Induction - Intelligently repel shy and sensitive rodents, birds or other animals with infrared induction and voice alarm at unique ultrasonic can help you effectively hunt animals up to 355 IN nearby Multi-level adjustment - Sensitivity and ultrasonic frequency can be adjusted according to the distance of the animal you want to drive. The operation is simple, just turn the knob clockwise to meet your different riding needs. Multiple Charging Methods - Solar and USB charging modes allow you to use it with confidence, rain or shine. It comes with its own battery, which has a long lifespan and can be used for about a week when fully charged. Suitable for many occasions - Whether it's a garden, orchard, the compact body also makes it work indoors, with mounting brackets at the bottom and hooks at the back, you can push it into the ground or hang it on the wall freely according to your superior needs.