The product equipped with advanced ultrasonic sound technology enhances the effect of driving away dogs at longer distances, so you don’t need to worry about you and your pets being attacked by a dog. Features: ¡¾Wide Application¡¿This dog repeller will help you drive away from the dog when you encounter a dog trying to attack your dog. What’s more, the product equipped with advanced ultrasonic sound technology, which can be heard by dogs, so it can be used as a dog training device to help you train your dog. Moreover, this product also has the function of illumination with high brightness flashlight. ¡¾3 Modes Flashlight¡¿The product has a strong flashlight, which can achieve three modes of constant light, strobe light, and SOS, suitable for you when walking your dog outside at night. What’s more, the flashlight has a smart light sensor, which can adjust its brightness automatically according to the environment. ¡¾Non-slip Grooves & Portable¡¿The back of the dog repeller is designed