TOOGOO(R) NEW Waterproof Rechargeable MEDIUM LARGE ANTI BARK NO BARKING DOG SHOCK COLLAR Waterproof, with rechargeable Ni-MH battery The option have vibration warning prior to the stimulation Modes to ensure your dog learns to stop barking 6 intensity levels (2 to 7) for a wide variety of dispositions 7 sensitivity levels (1 to 7) adjustable for different dogs and environments Easy testing method to check the no bark collar