Bought on Amazon but not exactly the same product on eBay at a Chinese seller. The reader is hardly worth its price. The components inside are welded to a minimum. Result, after one week of use, the jack begins to give signs of weakness (his arriving only on one ear, have not fully pressed to find the jack stereo). Then the controls not end badly run: in fact the button turns on itself ... In the end the jack is fully pressed and the player becomes unusable.
By dismantling the player you realize that the welds are more than minimalist, especially in regard to the jack, though subject to many physical constraints. And it must be the same with other parts (micro USB socket).
therefore caution. So much for 2 as I paid, we are tolerant, we do not expect great stuff and we pay for. 7 As much, it's different.