While your dog may be man's best friend, listening to him or her howl through the night or each time someone passes by your door can get annoying fast. That's why we developed the No Bark Dog Collar with three adjustable levels of training an audible beep, a vibration, and a gentle static shock. Great for dogs of all shapes and sizes, get yours today and help stop persistent barking with safe support. Digital display -- The digital tube shows the gears of vibration ,shock and sensitivity, each mode you can feel free to switch.Adjustable mode -- 1-7 level adjustable sensitivity, 0-7 gears of the vibration/shock, you can choose according to the instructions or the actual needs of your dog. Automatic protection -- an automatic protection mode to deactivate the collar if activated 7 times in 1 minute then back to work in one minutes. Rainproof collar -- That is suitable for all of your dog's indoor and outdoor activities. Adjustable Reflective Strip -- That allows you to keep an eye on your dog even in low visibility and also can protects your dog's life from cars etc. Package Includes:1 x No bark receiver1 x Adjustable Nylon Collar1 x Test Light1 x USB Cable1x instruction