Upgraded Sensitivity Chip Version 2024: Thanks to the feedback we received from using the anti-bark collar, we have upgraded the chip to make it more user-friendly 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 that shows the level and sensitivity of the mode. The red light is sound + vibration + shock mode, the green light is sound + vibration mode, and each mode has 4 sensitivity levels. You can choose the most effective method to train your dog according to its nature and behavior. AUTO MODE: Put your 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 be deactivated for 2 minutes to ensure the safety of the dog. WATERPROOF AND RECHARGEABLE: The IP67 waterproof anti-bark collar allows indoor and outdoor use in all weather