Humane and Harmless System - FOLKSMATE no bark collar has 3 stop barking mode ( beep, vibration, shock ) and 7- grade adjustable sensitivity. 1 to 7 Sensitivity level can be adjusted to fit for different kinds of dogs and specific environments, effectively stop barking with no harm to dogs of all types. Auto-Protection Mode - Security is the most important thing. The built-in no bark receiver features an automatic protection mode to deactivate the collar if the collar keep activates for 7 times in 1 minute. One minute after the product will enter the work mode. In automatic protection mode, press any button to re-enter the work mode. Smart Barking Detection Chip - Intelligent barking vibration detection instead of sound detection chip prevents false triggering. Only your dog's sound combined with vibrations of sound will trigger the sensors while other dogs' barking will not. Rechargeable & Waterproof - Built-in USB rechargeable battery and can be filled for an hour, full of electricity can be used continuously for 14-20 days.Now you can walk your dog anytime as the rainproof device is able to work effectively even in wet weather, but not suit for swimming. Satisfaction Guaranteed - We are happy to provide full satisfaction with our bark collar.You can get a full refund or replacement if you receive any defective items.