Top Quality Ultrasonic Dog Trainer -ideal for training your dog by reinforcing your commands! Can be an effective in deterring aggressive dogs and barking excessively! The ultrasonic sound emitted by the device is inaudible to humans but can be uncomfortable for dogs (up to 16.4 feet), causing them to back away. 

Portable, easy to use, making it convenient to offer better protection for yourself and/or your dog.  Comes with ultrasonic sound speaker and strong LED torch lights.The built-in battery which can last up to 60 days. Recharge using USB. 12 month parts warranty.