I only bought this clicker because I now have two dogs and needed a second, different-sounding clicker for my other dog. I regret buying it and wish I'd looked for a different one. Faults: I dislike the sound it makes - it's more of a 'whine' than a proper click. The whistle is too feeble so you will still need a separate one. There is no volume control and so if your dog is sound-sensitive, then it'll hate the sound of the clicker. I don't think it's a particularly robust clicker and will probably break fairly soon.