Effective Bark Control TrainingThe bark control collar including warning sound 'Beep' and gentle electric shock. One training cycle includes the two modes of 7 sensitivity levels. When the dog continuously barks(within 30s after last trigger),the duration of warning sound and electric shock will gradually lengthen to train the dogs. The sensitivity level is adjustable as you need. Safe For Your PetAs a warning signal,the first and second barks will not trigger the shock mode. If your pet stops barking for 30 seconds,the Anti-Bark Collar will automatically reset to the first 'tone only' level of correction. The electric contact points are covered with. At the same time,the contact points will not hurt the skin,with the conductive soft silicone rubber covered on it. IP67 WaterproofIP67 waterproof material allows safe use of the collar indoors and outdoors in any weather conditions. Your pet can still play outside and enjoy the pool,pond and lake on rainy days.(The charging port needs to be covered the silicone plug).