The Ultrasonic Bark Stop Dog Training Collar is an advanced behaviour modification device designed to help train your dog to stop excessive barking. You can now truly enjoy the outdoors with your pet, and eliminate nuisance barking.

Features:
Helps train your dog to stop barking.
Dogs quickly learn that their barking causes this irritating sound and stop barking to stop the noise.
Adjustable stretch collar to fit different sizes:(abt.) Longest: 11.5", Shortest: 7", Width: 0.5".

Ultrasonic and audible mode selections.
The ultrasonic sound is harmless.
High and low modes (high for big dogs, low for small dogs)
Triggered accurately by bark vibration (can not be activated by other dogs barking).
Adjustable volume.
For most dogs, it takes 7 to 14 days of training. For a few dogs, it takes 4 to 6 weeks. It's rare for it to take any longer.
Audible Mode: Creates harsh buzz to stop barking
Ultrasonic Mode: Works by sending out an ultrasonic signal that only dogs can hear when activated by the barking.

NOTE:Not guaranteed to work on all dogs, depends on every dog's sensibility to ultrasonic sound. Works better for small, medium dogs.

Specification:
Adjustable Stretch Collar
Lightweight Construction
Ultrasonic and Audible Selections
On/Off Button
Triggers accurately activited by Bark Vibration (can not be activated by other dogs barking)
LED indicator
Color: White
Net weight: 42g
Package weight: 51g

Packing content:
1 x Bark Stop Control collar
1 x Adjustable strap
2 x L1130 button batteries