Dual-head Portable Handheld Ultrasonic Pet Dog Repeller Control Training Device Trainer

Features:
A must item for pet owners, perfect for training all kinds of dogs.
Trains pets to be obedient, corrects misbehavior and stops barking.
Simple turn the switch and use effective.
Choose ''light'' switch gear, can be used as a flashlight.
Expel ferocious dogs effectively and protects you from vicious dog attack.
Since ultrasound is above the upper limit of human hearing, there is no effects on people.
No harms to human and pets can be used as a torch at usual times.
With easy-to-carry strap, portable, convenient and easy to use.