I use this collar mostly as a backup command for my herding Collie if he gets too far and can't hear me. Or when he is being a stubborn smart dog.
Always works even with long haired dogs like my rough collie.
The battery lasts for days.
Can't go wrong. Don't buy some cheap Amazon thing.
This is my second one of this version because I lost the first one. It's built to last and has a compact remote that is easy to feel buttons through clothing too. I always have it on my dog for consistency in training. No more than 8 hours a day but always outside the home.