Works, but watch out for the little screen
I've bought two of these since they work well.  Unfortunately though, both times I've lost the little screen, which ends up making the device mostly useless.  The screen is a pain to clean, and very easy to lose.  I guess, for the price, this is about as good as it gets.  However, I'd think the company would provide extra screens, since they're so easy to lose.
Rating: 2 stars