I am so happy with my dog training collar purchase. This is 100% what I need to control my dog who loves to enjoy his voice all night long. Used it twice and my pup start to realize that he needs to calm down a bit at night. I'm happy with it. Emailed customer service before purchasing and they are very helpful in helping me find the right training device for my pup. Great product, great service. Will definitely recommend it to more friends.