The CH YAN3 M is the magnetized version of the YanCheng YAN3. The magnetization service was performed on a stock YAN3 by Cuber’s Home, an independent company based in China.
The YAN3 M is packaged inside a specially marked YAN3 box, and it comes with all of the original YAN3 materials plus a special brown cube bag, a screwdriver, some spare magnets, and an official numbered card.