Smart Barking Detection Chip: Intelligent barking vibration detection instead of sound detection chip prevents false triggering. Only your dog's barking can trigger the collar while other dogs' barking nearby can?t trigger it. Humane and Harmless System: The no bark collar has an adjustable sensitivity and 3 training modes (beep, vibration, shock), 0-7 adjustable grade of those functions, gentle shock is safe or you can choose no shock mode as your needs, effectively stop barking with no harm to dogs of all types. Built in security mode: Security is the most important thing. The built-in no bark receiver features an automatic protection mode to deactivate the collar if activated 7 times in 1 minute, after one minute it will back to work. Dogs are quick learners - once they realize they can avoid the annoying beep and buzz they stop barking. Rechargeable and Rainproof: Built-in USB rechargeable battery, lasting about 14 days to solve the issue of batteries replaced frequent. Rainproof in rain, but not in water. Adjustable anti-bark collar. Better experience: Digital tube shows the gears of battery electricity ,vibration ,shock and sensitivity. Constantly press the corresponding function of the button, then you can adjust the gear. Please read the instructions firstly and configure the correct mode for you pets.