I bought one after seeing Quickbeam's review. I liked the idea of a ultra durable small dive/survival light...
It has a very large head compared to the thin handle, but it was a very neat design. I really liked the diffuser, though the beam was not incredibly bright - a trade off I was happy to make to have 7 hours of burn time on one set of batteries.
After playing with it for a couple of days, the magnetic switch started acting up. The light would stay on, then turn off and not come on for several on/off cycles. Then it would work fine again...until forty or fifty cycles later, it would not come on at all, even after changing batteries.
I called the company and they were very nice. They said they had had a switch (3rd party part) problem before but thought it was corrected. I asked for a exchange, but they said they would rather refund my money until they got the problem solved, then they would contact me. They credited my card, but I have yet to hear from them....Too bad...neat light.
This happened a year ago...They have very likely fixed the problem by now.