【Humane Harmless Design】: Dogs are 'Man's best friend', but sometimes their barking make your neighbors and family unbearable. This Anti Bark Collar is an effective and humane way to teach your dog not to bark.When the sound of dog barking reaches a certain frequency, it will trigger the sensors. The product will make a sound first, followed by a vibration and then a shock. It is recommended that the unit is used without the shock feature engaged to determine wheather the dog will stop barking, 【 4 Training Modes & Visible Digital Display】: The petsafe bark collar can adjust the L/M/H sensitivity level and 4 training modes: continuous beep, beep + vibration, beep + static shock, beep + vibration + static shock. The static shock is safe, or you can choose non-shock mode as needed. The visual digital display shows the power from L (low) to M (middle) to H (high) and the static shock and vibration levels can be adjusted from 0 (off) to L (low) to M (medium) to H (high). 【Smart Barking Detection Chip】: No Bark Collar uses the latest vibration sensor technology. Intelligent barking vibration detection instead of sound detection chip prevents false triggering. Only the prongs touches your dog's skin, the dog's sound combined with vibrations of sound will trigger the sensors while other dogs' barking will not. This smart design can help your dog avoid unnecessary response of the bark collar. 【IP7 Waterproof & Rechargeable lithium battery】: The bark collar built-in 500 mAh USB rechargeable battery and it can be full charged in an hour and will work continuously for 14-20 days. With this IPX7 water-resistant rating dog bark collar, solid and lightweight costruction is great for indoor and outdoor use. You can go out and take the dog for a walk anytime and anywhere. It is able to work effectively even in the rain. 【100% SATISFY SERVICE GUARANTEE】: 360 days warranty provided by momen. If you are not satisfied with our product, please don't hesitate to contact us, we will offer you full refund or new replacement.