2 in 1 Dog Training Collar Automatic Anti Bark Control with Remote Rechargeable and Waterproof for 2 dogs

I bought it with a try and see attitude. I didn't expect that the effect was so good and the sensitivity was very high. When I adjusted the vibration mode, it was only a slight vibration, which would not hurt the dog. In the past, the dog would bark at random as long as there was a sound, but now it is much better