Works only when your dog barks!

Provides a trouble-free solution to problem barking at a reasonable cost. This unique collar is safe, simple and effective. It goes off when it senses the vibration of your dog`s neck as they bark. The collar responds to your pets bark only. The lightweight collar trains your dog to stop excessive barking by using one of 3 levels of correction. The correction will not hurt or endanger your pet in any way.

Adjustable collar. Recommended for all size dogs.