LemonBest Anti Bark Collar No Barking Training Electric Shock or Vibration

Type M for USA use:  Features: Keep Your Dog Quite: Dog is our friend, but sometimes its barking is bothering us and unexpected barking often disturbs neighbor, so, you need this collar to stop the barking in a safe way. It use the vibration sensor for sensitivity distinction, when the sound of the barking reaches a certain frequency, it will trigger the sensor thus triggering the sound, vibration and shock. Adjustable Mode: 1~7 levels of sensitivity and 0-7 grades of the vibration/shock is adjustable, you can choose it according to the weight or the actual needs of your dog, convenient to use. Safe to Use: The Max. shock current is 1UA which is no harm to dogs. Built-in auto-protection mode, the collar will not work if it is activated 7 times in 1 minute, then it back to work after 1 minute. Only the dog's sound combined with vibrations will trigger the sensor that means other dog's sound near the collar cannot trigger the sensor. Rechargeable and Waterproof: Built-in rechargeable bat