The PetSafe Bark Control Collar is the simplest and one of the smallest bark control collars available. When your dog barks, the collar omits a warning beep and mild correction. And if pet continues to bark, another tone will be issued with a slightly stronger correction - this will progressively continue until barking ceases. Similiar to other PetSafe training collars, a built-in feature senses the vibrations in the dog's throat when barking occurs. The collar will help your dog learn the difference between good barking and bad barking.This training system is harmless and one of the most effective barking deterrent systems on the market.

Features:

• 6 levels of static correction
• Waterproof
• Adjustable collar for neck sizes 6 to 28 inches
• Adjusts to dog's temperament, starting at the lowest level
• Automatic shut-off feature for when barking exceeds 15 times within 50 second time period
• Low battery indicator
• For use indoors or outdoors
• 6-volt lithium battery included (RFA-67D-11)
• Owner's manual and training video included

Product Specs: Compact receiver weighs 1.5oz;