Very good variable strengths. Not too harsh, which was a concern.

This works well for the dog! Especially because he is a German Shepard. He is such a good boy so we hardly have to use it. When we do need it it’s good.

It’s easy to figure out. Gives warning beeps and vibrations for the dog.

Easy to set up and easy to use. I like the beep and vibration option if not ready to use the static charge on your pet.

Haven’t used it long, but shows promise already! He is already behaving much much better! 5 month old golden retriever. We have only need to use the vibration mostly. Just one shock to let him know what it was and then went to vibration to pretty much remind him.

A little large for my dachshund/yorkie mix, but the beep and lowest vibration setting have been more than sufficient to keep his attention. I don't plan on using the shock as he is so small.