Recommended for dogs from 15lbs up to giant breeds * With this new high quality rechargeable and waterproof anti bark collar, you don"t have to worry about changing the expensive battery frequently and your dog playing outside in the rainy days. It would be the BEST CHOICE for both you and your dog! * 6 intensity levels (2 to 7) for a wide variety of dispositions * 7 sensitivity levels (1 to 7) adjustable for different dogs and environments * The option have vibration warning prior to the stimulation Modes to ensure your dog learns to stop barking