Using the latest ultrasonic technology, the SUPER DOGCHASER uses two ways to repel a dog.
One is the discomforting but not harmful high frequency sound (20,000Hz-25,000Hz), audible to dogs but not to humans. And, the second is a super bright LED flashing strobe light that temporarily blinds and confuses the dog. Helps stop the approach of unwanted dogs up to 40 feet. Also has a training setting. Requires on 9 volt battery.(Not Included) Also can be used as a flashlight.