I bought this collar to replace my previous Petsafe bark control collar. My previous collar was extremely low quality and tended to work sporadically, generally just cheap. I could tell as soon as I opened the package, this was a well made product. Since having it, it has worked flawlessly and i am confident that it will last a long long time because it is made so well. Two thumbs up for dogtra. (Posted on 2/5/2013)