Pennyy Anti Barking Device Stop Dog Barking Ultrasonic 3 in 1 Stop Bark Handheld with LED Flashlight for Small Medium and Large Dogs

Specifications:
Frequency: 25 KHz
Size: approx 4.9" * 1.6"
Color: Black & Yellow
Material: Plastic.
Battery Need: 9V battery (not included)

Why Choose Our Pet Repeller?
I. Dog trainer can get the dog's attention and then give your dog command.
II. Perfect for training all kinds of dogs such as that are used as pets, in police and for shepherding.
III.You can push the button in semi-long bursts when an aggressive dog is attacking. Dog trainers work great on the worst barker.

NOTE:
1.The battery is not included in the package. Please purchase it yourself. Dog trainers work on most dogs, but sometimes it does not apply to giant dogs and trained dogs.
2.When using our ultrasonic training device, the distance of the dog should be within 32 feet to avoid unreasonable working conditions.
3.The battery is best to use 9V battery, the shorter the distance, the closer to the dog's head, the better the effect.