xcivi Paipaitek H166 PD858 Waterproof Pet Dog Anti Bark No Bark stop Barking collar Training Control Shock Collar High-quality Electronic Anti-Bark Dog Collar and Sends harmless warning sound and shock to the dog whenever it barks.The stimulations repeat through 7 correction levels, the intensity gradually increases until the dog stops for thirty seconds. If the continuous stimulus reaches the 7 levels, then the Collar will stop working for 1 minutes to protect the dog Vibration Mode (V) warning prior to the stimulation 6 intensity levels (2-7) for a wide variety of dispositions 7 Sensitivity levels (1-7) adjustable for different dogs and environments 5.Water-proof and Rechargeable