JANNIK Barking Control Collar for Dogs - Humane Stop Barking Training Collar - Vibration and Sound - no Shock Collar - Safe for Dogs and Human with Water Resistance. ADVANCE MICROPROCESSOR CONTROL: with 6 levels of sensitivity adjustment, sound and vibration will only be triggered by your dog. The new sensor will make you dog feel as comfortable as possible. EFFECTIVE FROM 5 LBS TO 150 LBS DOGS: The collar which is easy to adjust is made from nylon strap with high quality. This makes JANNIX no bark collar fit for dogs of all sizes, from the small 5 lbs dogs to the great 150 lbs ones. HUMANE, PAINLESS TONE AND VIBRATION: with the continuous beeping sound and the vibration, when your dog barks, he/she will soon learn that he/she has to stop barking in order to stop the unpleasant noise and the vibration WATER RESISTANT LED CLIP: JANNIK would love to give buyers a Spot Dog Light which provides more safety and visibility at night for your canine friend. The Bark Control Collar and the Led Clip will be the best for your beloved dog. TIPS FOR USERS: In order to receive the best results from JANNIK collar, you should check the battery weekly and be vigilant because sometimes your dog's barking is due to thieves, dangers or even natural disasters.