I actually purchased this to give to my parents as they have a Cocker Spaniel that basically has ADHD. It's really hard to get her attention outdoors because she's just busy going crazy and chasing squirrels and what not. They actually have another training collar, but they needed a second for when theirs is charging. The dog has always responded really well to just the beeps and vibration so I cannot review the 'shock' part of this, but the other two work just fine. The vibration has different intensities which is great. They always start on a low intensity and raise it if she doesn't respond. The only thing I have a minor issue with is the beep. It just isn't quite as loud as I'd like. The dog can hear it, sure...but with the other training collar, the human can hear it from a distance to track where the dog is as well. Other than that, this set is fantastic. I've never tested the distance limit, but it does work from quite far away as my parents live on a 5 acre farm and it works from one side to the other! If you're in the market for a product like this, especially with multiple dogs, this is a great deal for sure.