You never know John. Get a micrometer and check the rotor width thickness 30mm from the tip. The spec is 20um. If it's 19 or 21 it MIGHT BE fake, or the mold was worn. Just to be sure. I pick mine up directly from customs in Boston. Hanjing unloads the sealed container and I have to cut the security tag. With all the fakes, that's the only way, other than flying to Hong Kong.I exchanged mine direct with DJI. The replacement wasn't a refurbished unit. Brand new unit. It was quick, 10 days.