The Garmin Bark Limiter 2 features a slim-fit design for added comfort and is ready to go right out of the box. It senses throat vibrations to differentiate between barking and other sounds, significantly reducing false corrections. You can choose the correction style that works best for your dog -- tone and vibration, Autorise STIM, or 10 direct set STIM levels. The LED light on the collar flashes briefly to let you see when throat vibrations are being detected or bark corrections are being activated. Plus, you can connect your Bark Limiter 2 to the free Garmin Canine smartphone app to remotely adjust settings and review bark history.