【 4 Humanized, Effective Anti-barking Modes】: The bark collars offers 3 NO Shock modes( Beep, vibration, beep+vibration) and 1 Shock mode (beep+vibration+shock), allowing you to select the most efficient way to curb your dog's excessive barking without causing them any stress or pain.

【0 False Triggers with Smart AI Pro Chip】: Equipped with smart bark-detecting technology, our bark collar for medium dogs provides 3X accurate noise filtering. Only your dog's barking triggers correction, and if the anti bark collar is activated 8 times in a row, the anti-barking collar will stop working for 30 seconds, preventing dogs from unnecessary punishment, mistake or over-correction.

【 8 sensitivity Automatic Stop Barking in 0.1 Sec】: With an adjustable sensitivity level of 1-8, it meets all your dog's needs, and allows you to use progressive training functions and provide positive assistance for good behavior. The levels of dog barking collars can be adjusted for different circumstances and dog types. Let the use of bark activated shock collars play a greater role!

【 Longer Battery Life & Quick Charging】 Nuffloff bark collar for large dog can be fully charged quickly in 2 hours for up to 20 days of work time. No need to worry about the problem of being easily exhausted. Nuffloff automatic bark collar uses an intuitive large LED color interface, which is user-friendly to read the selected mode, power capacity, and low battery reminder.

【Adjustable Collar Strap & IP67 Waterproof 】Made of skin-friendly and comfortable soft nylon, the bark collar large breed strap's length can be adjusted, fitting dogs weighing over 10 pounds with neck measurements ranging from 8 to 24.4 inches! With the IP67 waterproof function, it does not impact outdoor activities at all, performing exceptionally well in hiking, swimming, and rainy weather.