DogWatch The BarkCollar No-Bark Training Collar with Bark Forgiveness, Auto-Adjusting Levels, Bark Counter, and Rechargeable Battery The BarkCollar has a 3-second bark forgiveness to allow for normal, non-excessive barking. 5 correction settings and 1 Progressive setting which auto-adjust to best level within each setting. Vibration-only setting for dogs that only need a slight reminder to curb their barking. The BarkCounter tracks bark activity, even if you arent there to hear it. Helps you find the best setting. Rechargeable battery lasts up to 2 months on a single charge.