This product NVK was perfect, I was a bit leary, so many to chose from etc. It was at an almost complete charge, cuz of course that is the first thing to check get it charging while you read throught the instructions carefully. It work great for my GSD, he was a bit hyper and jumpy when visitors come over, but after 2 times completely differernt dog, I still use as he is not 100% there yet..I do reccommend, and I do use this product, was not paid for the review.