*Features*: ** Effective Bark Control Training*:The 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 needs. ** Safe For Your Pet*:As 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 resets 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 Waterproof*:IP67 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). ** Rechargeable*:Full charge in around 3 hours for about 15 days regular use. You can charge it with PC,adapter or power bank. ** Adjustable& Suitable For All Size*:The collar is adjustable,suitable for small,medium and large dogs. It is made of lightweight material,will not add burden to your small dogs. Notes: Do not use it on dogs less than 3 months old. *Specifications*: Product Type: Dog Bark Control Training Collar Material: ABS Color Available: Black Waterproof Grade: IP67 Item Size: 8x4.5x7.5 cm/3.15x1.78x2.96inch Item Weight: 80g/0.18lbs Collar Length: 73cm/27.83inch *Package Lists*: 1 x Collar 1 x Trigger 1 x USB Cable 4x Short Contact Points 4x Short Silicone Rubbers Test Bulb 1x User Manual