2022 Upgraded Sensitivity Chip: Thanks to the feedback we received from using the anti-bark collar, we have upgraded the chip to be more humane and less sensitive. You can finally control your dog's barking, which will make you and your dog happier. 2 Training Modes & 4 Sensitivity Levels: The receiver is designed with a digital display to show the level and sensitivity of the modes. Red light for sound + vibration + shock mode, green light for sound + vibration mode, and each mode has 4 sensitivity levels. The most effective mode can be chosen to train the dog, depending on its nature and behavior. Automatic Mode: Put the anti-bark collar in automatic mode and let it do the rest! If the collar is triggered more than 6 times in 1 minute, it will enter protection mode, which will deactivate it for 2 minutes to ensure the dog's safety. Waterproof and Rechargeable: The IP67 waterproof bark collar allows for indoor and outdoor use in all weather conditions. A built-in 480mAh USB