I bought this to use as extra insurance for protection. It works well (although I have never used it on anyone yet and hope I never have to).

When I first bought it, I thought the cell phone design would be a great method to disguise it. However, after having it, I'm not so sure. This makes it appear as though I carry two cell phones (awkward) one of which appears a little dated and I'm not so sure I wouldn't care to make a potential attacker aware that I have a zapper.