Wow, that’s something I didn’t even consider. I don’t want to step on the toes of either company, so I’m not sure how to use the serial number to find out which version the light is. I’d be really embarrassed to have a positive comparison of both lights, only to find that the one sent to me was the “American” version. I’m sure there are knock offs out there, and it can be really hard to tell the difference. I just want to shed some light on the things I can rule out for sure, without making it about who is “legit” or whatever. All I can do is give a non biased comparison of internal components based off the information I have.