-BEST GIFT FOR YOUR BEST FRIEND - The Anti Bark Training Collar is designed to transform your best friend and eliminate unnecessary barking. Through gradual corrective stimulation, the device creates an association your dog will understand, it’s safe and humane. -Choose the sensitivity setting - The Bark Control has 7 levels of correction that reproduce a different combination of sounds and vibrations. First Bark: Emits a progressive warning tone for 1.5 seconds. Second Bark: Emits a progressive warning tone for 2.5 seconds. Third bark: tone for 4 seconds + vibration for 0.5 seconds. Fourth Bark: Sound for 4 seconds + Vibration for 1 second. Fifth bark: tone for 4 seconds + vibration for 1.5 seconds. Sixth Bark: Sound for 4 seconds + Vibration for 2 seconds. Seventh Bark: Sound for 4 seconds+ Suitable for all sizes. The adjustable collar strap makes it easy to fit any dog from 5" to 21". An ideal solution that will not harm your dog. Any size and over 12 lbs. Waterproof - is