Esky Waterproof Rechargable NoBark Anti-bark Bark Control Collar [Vibration with Shock Correction] Automatically identifies the dogs bark, voice recognition minimizes false triggering Sensitivity(High/Medium/Low bark)is user-adjustable according to your dog's barking and specific environments The 120 seconds dormancy design makes this product more safe and humanized The waterproof function provides customers more convenience.(DO NOT immerse it into water or let dogs swim with it.) Long-life rechargeable battery, charger, operating guide, and 1 Year warranty included