This hand-held dog repellent uses an ultrasonic transmitter to send messages to approaching dogs before they become aggressive, so as to protect humans from dangerous dogs while walking, jogging, or cycling. It can also be used as a dog repellent, dog training device, and a flashlight, which is greatly functional. Features: Keep Away from Unfriendly Dogs: This hand-held dog repellent use ultrasonic transmitters, which can generate powerful ultrasonic waves. The ultrasound range it carries is capable of sending messages to approaching dogs before they become aggressive, so as to protect humans from dangerous dogs while walking, jogging, or cycling. Hand-held Pocket Size: This device is in a small size, which is very comfortable to put in the pocket. It is equipped with a lanyard so that you can carry wherever you need. LED Flashlight: It can produce a strong white light. Set the function switch to the first gear and press the BEAM button, then it would be a flashlight illuminating at
