No Bark Collar for All Breeds of Dogs Small Medium and Large. This Shock and Vibration Anti Bark Collar for Dog Training Is Rechargable Waterproof and Has Testing and Protection Modes to Ensure Your Pet Is Safe. Intensity and Sensitivity Levels. Fully Rechargable with Ni-MH battery and Water-proof; CE Approval with ROSH complaince This model has vibration warning prior to the stimulation Modes to ensure your dog learns to stop barking Effective fit for dogs from 10 to 120 pounds 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 Dual activation avoids accidental triggering due to impact, vigorous head shaking and other dogs barking