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