This high quality PetSafe product includes the QuickFit buckle. When your dog barks, this anti bark collar gives a mild static correction. Then if your dog continues to bark within 30 seconds, it will receive a slightly stronger correction. The process will continue up through six levels of correction. The collar senses vibrations in your dog's throat that happen only during barking. While not harmful, based on the barking, the Comfort Fit Bark Control collar will send a correction to the dog. This is one of the most effective detterents to excessive barking. Recommended for dogs over 8 lbs.

Features:

• 6 self-adjustable progressive correction levels
• Waterproof fully adjustable comfortable collar. Fits neck sizes 8 to 28 inches.
• QuickFit buckle
• Battery included (RFA-67D-11), and low battery indicator light.
• Internal microprocessor technology used to discriminate barking from other external noises.
• Automatic shut-off if dog continues to bark more than 15 times in a 50 second period. The collar will reset after 3 minutes.
• Complete operating guide

Product Specs: Collar - 1.5H x 2.5W x 1.25D, weight-4.0 oz.