Why are anti-bark collars an effective training tool? Anti-bark collars are designed to discourage your dog from barking during training and improve their behavior without the need for physical or verbal punishment. Your dog will be healthier and get along better with family, friends, and neighbors. They offer shock and non-shock modes, as well as tone + vibration and tone + vibration + static pulse. Simply press the M button to change modes and enjoy peace of mind. This anti-bark collar is suitable for large, medium, and small dogs weighing 4 to 50 kg. How does it work? Place the collar around your dog's neck. When the dog's barking and throat vibrations reach a certain frequency detected by the sensor, the sensor will automatically activate and emit a tone followed by a vibration or electrostatic shock. This method can correct your dog's barking. Activate the sensor to avoid problems. The activation sensor built into the collar detects all sounds and filters out only barking to