-3 ultrasonic modes
-With light of flash and SOS.
-Suitable for big dogs and small dogs.
-Durable and built to last.
Ultrasonic Trainer is a hand-held device that uses ultrasonic sound waves to deter nuisance barking. There are three ultrasonic modes, each with a different sound frequency, which can be used depending on the size of the dog. The ultrasonic trainer is suitable for both big dogs and small dogs, and has a range of up to 30 feet. The trainer also has a bright LED flashlight for finding lost pets or guiding in the dark, and an SOS signal that can be used in emergencies.