It's been about three weeks since I bought the laser, it is very powerful !!! I do not know if it really 5 miles but anyway I play a lot with. Blackheads are empty laser that quickly (perhaps too) batteries and three weeks after the switch does not work very well. Indeed, I do not know how to be said, but we must force the button because the button is already pressed or when there is no force feedback, that is to say, in some sorts the button is as "soft", I do not know if you know.