Why in my original EarPods membrane is not paper?

I began to work poorly headphones earpods (left earpiece is very quiet).

I decided to disassemble them following your instruction. But, after an analysis of the left earpiece, I saw that my headphone is different from your earphone in the picture (the membrane is not paper, and also another magnet). The remote control is also a little different from yours.

Both the iPhone & headphones are from the original box number. I would like to know is Apple has changed the structure of the headphones? or is it fake? When I bought the phone box it was in the original film, I don't think anyone replaced the headphones.

Sorry for my english, it's Google Translate