Handheld Dog Repellent, Dual Channel Electronic Animal Repellent, Handy Ultrasonic Dog Training Pet Bark Stopper for Outdoor Camping Garden This product uses dual-channel super-driven dog, double-headed dog, laser drive snake, drive cat, lighting function in one of the super-acoustic drive. Used to prevent dog attacks, issue ultrasound to repel the dog or wild wolf. In normal situation, it can be used as a normal flashlight to illuminate at night. Keep unfriendly dogs away; protect yourself from dangerous dogs while walking, jogging, or bicycling. Ultrasonic wave reaches up to 125db. Audible to dogs but not to human. Effectively target animals up to 20m away. Can also be used as dog training device. 1-Month Hassle, 7*24 online support standing by, worry- free 100% money-back guarantee, 1-Month Replacement Warranty and life-time technical support.