Humane and Harmless System -- The bark collars adjustable sensitivity-ultrasonic sound and no harm shock. Choose a suitable sensitive level and suitable model for your dog, can effectively stop barking with no harm to dogs. Gentle shock is safe or you can choose no shock mode as your needs. 100% SAFE. No barking collar Intelligent Recognition Sound System -- Intelligent barking vibration detection instead of sound detection chip will prevent the false triggering. Only your dog sound combined with vibrations of sound will trigger the sensors, while other dog barking will not. This smart design would protect your dog from unnecessary response of the bark collar. Intelligent Protection System -- Unlike the traditional bark collars that train your dog only through constantly working, you can choose shock or no shock mode as you want! In Bepp+Vibrate Mode, the Bark Control Collar will beep for 3 seconds and then vibrate for 3 seconds every time it's triggered; In Shock+Bepp+Vibrate Mode,This upgraded anti-bark collar could continuously activate 6 different grades if your dog keep barking all the time, then come into sleep mode for 2 minutes. Waterproof - This new & improved No Bark Collar is certified according to IP67 Waterproof Standard. Solid and lightweight costruction is great for indoor and outdoor use even in bad weather. Choose us to let your dog enjoy running in the rain. Warranty and Purchase Guarantee -- CE RoHS certificated. Please read the instructions clearly and ensure the correct mode before putting the bark collar on your dogs. This collar comes with 12 months warranty and 30 days money back. if you meet any issue, please feel free to contact us! We will answer within 24 hours!