I got this for my 2yr old Parsons Terrier, she would bark at everything that went on outside when our door is open. The packaging is really nice. The info phamplet is very clear in its instructions on how to use the no bark collar. I love that it has 3 types of correction. I wasn't to sure about the shock type feature. I was thinking it was gonna be like a taser, LOL! It is NOT! It gives a jolt like white static electricity. My husband tried all 7 settings. I was only brave enough to try up to setting 3, LoL! But it was not harmful at all. We didn't even need to turn that on! We used the vibrate with the beep and with in 5 different times barking, she stopped. She has barked once or twice not wearing the collar when the door was open but as soon as I show her the collar she stops! Another thing I really liked was that you can adjust all the settings, you can set how sensitive you want the collar to be to the barking, how strong you want the vibration or the shock. Or shut the shock feature off totally. It charges with in an hour with the usb cable and my dog wore it for a week strait so far and I didn't need to re-charge it. So Im not sure how long it lasts on one charge, but I think a week is a long time! The collar is small enough to fit a toy breed and can expand large enough to fit an xl breed dog. Their customer service is awesome too!!