The Bark Control collar is a versatile bark collar that is one of the lightest currently available. This product is designed to control and reduce nuisance barking and add to the peace and harmony between you and your pet as well as you and your neighbors. There are six levels of correction available from the Standard 6 model. The first bark triggers a mild corrective sensation. Each consecutive bark triggers a static correction from the collar. If the dog continues to bark after receiving a correction the collar automatically turns up the intensity of the next correction.