Review (3/5): Good shaver for the price but a design flaw that can be fixed.
Okay, this shaver, which is sold under a varIety of name brands but is the FK-605 IPX7, almost certainly made in China (maybe by Genpai ?), has a design flaw, at least in this iteration, which causes it to suddenly not turn on (and maybe other fault modes as well). It's a good shaver, especially for the price, but mine recently would just not turn on, even though when I plugged it into its charger it showed fully charged. I like to fiddle with broken things and try to fix them, and I found that the little circuit board inside the shaver was out of place. The circuit board is held by one small screw and two plastic clips, but a good jar can knock it out of the clips so that it doesn't make correct contact with the on/off switch slider. Warning: If the battery has a charge on it, use only non-conductive tools once you get the case open. The board was fairly easily snapped back into place, and full functionality was restored. I used some wooden toothpick pieces to wedge the plastic clips securely in place, so hopefully this won't happen again. To expose the six little screws that hold the case together, the silver piece that holds the on/off switch can be pretty easily popped off, and then the black piece below the silver piece will come right off.