[Optional Mode and Progressive Stimulation] The rechargeable dog bark collar has 3 different modes: buzzer/vibration/electric shock, allowing you to choose the appropriate stimulation for your dog. You can choose 1 beep + vibration mode or 2 beeps + vibration + discharge mode. This anti-bark collar for dogs works automatically and progressively, it is not very aggressive for the dog, and makes it possible to effectively stop barking. Mode 3 is used for testing. [Self-Protection Mode and Sensitive Sensor] The A+ training dog bark collar has a self-protection mode. If the collar trips 7 times in one minute, the collar will automatically close for one minute to better protect your dog. You can press any button to enter normal operation mode. Since the sensitive sensor can filter out barking or other noises from other dogs, your dog will not be affected by false triggers. [Suitable for all dogs and comfortable to use] Because there are 2 pairs of conductive posts, this dog bark collar is
