Aetertek® 600 Yard Remote Range Dog Training BARK Control Shock Trainer AUTO Anti BARK Collar for All Dogs

The tone is great, I dont even need to use the shock on my dog or in my moms puppy but her older pitbull mix didnt even register the tone or vibration. Even the shock seems pretty week as I trued it on myself at 4 and barely felt it. It is difficult to switch between dogs and even more so if you want to shock one and vibrate the other. There’s definitely a second delay for each action, better if you’re only using on one dog. Thats why only the four stars, otherwise good product, battery stays charged for a long time.