Dog Stop Barking Collar for S, M and L Dogs-Vibration No Shock Collar-Waterproof Device Dog Stop Barking Collar for Small Medium Large Dogs - Best No Bark Control Vibration No Shock Collar - Safe Pet Waterproof Device •Condition:  Brand New in a box •Item: Dog Bark Collar •Batteries: required. (Included) •1 Bark Control Unit (Included) •2 Plastic covers:  blue & orange (Included) •2 Plastic sets probes (Included) •Instruction (Included) •Product Dimensions: 2.8 x 1 x 1.6 inches; 3.2 Ounces •Manufacturer: DogRook 1.Humane and painless vibration caused by barking. 2.Automatically increased tone and vibration stimuli caused by barking. 3.Controlled microprocessor. 4.Operated by a standard 6-volt battery. 5.Small and light. 6.Recommended to use for dogs from 10lbs to 120 lbs or more. 7.High-quality nylon strap (from 10 to 22 inches). 8.7 levels of sensitivity. 9.Two reflective while stripes on the belt for the nighttime. Dog Bark Collar Upgrade 2018 - Humane Anti Bark Training Collar - Vibration No Shock Collar - Stop Barking Collar for Small Medium Large Dogs - Best No Bark Control Collar - Safe Pet Waterproof Device •Humane and effective bark collar - in 96% cases help decrease (eliminate) dog's barking by automatic performance safe stages of sound (beeps) and vibration. Beeps and vibrations are switching automatically based on the amount of dog's barking, increasing after each bark. •Adjustable for S, M, L dogs - no shock bark collar is adjustable for dogs weighing 10 to 120 lbs or more with neck size of 10 to 22 inches. Adjust the strap according to the size of your dog.