About this item For any dog owner- only a few days of training with this collar and your pup is free to roam outside. Waterproof collar - IP67 waterproof, don't need to worry about taking this device off even your dog got loose to the local pond or in the rain. Fashionable looking - Strangers would not ridicule you for using a bark collar on your dog. Training tool- The collar fit your dog with lots of room to breathe. It has several different sensitivity level from 1 to 7 Rechargeable bark collar- This is completely rechargeable using the included USB cable, and that full charge will last you up to 10 days. Why Choose Nest 9 dog bark collar? 1.Effective 3 training modes: beep,vibration and shock. 2.Digital LED screen and sensitive touch button,very convenient to use it both day and night. 3.Sturdy IP67 waterproof material,you can enjoy peaceful time with your pet even in the snow/rain. 4.USB rechargeable battery,continuously work for 15 days. 5.Better anti-interference technology,intelligently filtering out potential unnecessary noise to avoid any false corrections. (Notes: Only when you tap 3 times to enter setting mode,you can adjust level of setting mode. ) Package Includes: 1 x Nest 9 Bark Collar 1 x Adjustable Nylon Collar 2 x Electric Shock Terminals 4 x Silicone Protective Covers 1 x Test Board 1 x USB Cable 1 x Instruction Warm Prompt: 1.Used to training but not punishing. 2.Avoid collar on the dog more than 12 hours per day. 3.Please use vibration/e-shock with lower level 1-3 instead of high level for small dogs. 4.When possible,reposition the collar on the dog's neck every 1 to 2 hours. 5.It's most suitable if one finger can be inserted under the collar.