mUV water purifier

I was curious if anyone has used or heard anything about one of these uv water purifiers? The price is nice and it is pretty light at 2.4 oz. I wonder if it is reliable? I hate relying on electronic crap. That's probably why the only things that have batteries in my pack are my petzl elite and little photon light.

mUV water treatment

looks like an old post, but nobody has answered it. I have one and have used it a few times. It works great, or at least I haven't gotten sick! It is easy to charge up and works well with Gatorade bottles. I do always bring backup in case the light burns out or I run out of a charge.