Perfect for studying languages ​​("rewind" function)

I change my review below and carry my score of 1 to 4, since unbearable background noise fades with time (???). It has completely disappeared from the camera that I use most often and has already declined significantly in the second.
Above all, I found out that this drive is perfect for the study of languages ​​since it allows a fast return by holding down
My previous comment:
1) the time estimated by Amazon was not respected (Ordered on 04.09.2014 received the 10/04/2014)
2) on both ordered (considering the price ... let's be crazy) had a defective headphones
3) There, on both, a background noise of a high volume evoking a wheelbarrow to the bent wheel and badly oiled (unbearable to the helmet, slightly offset on the car radio).
4) It reads THAT MP3 (not even the wav, it is certainly clear but one would think that for the wav is implied).

If there were not this infernal din in the background (tested with different compression rates), it would work perfectly for the use that I want (study of foreign languages ​​in the car for my trips and need a small connectable device on the car radio on which I could frequently press "play - pause" without releasing the steering wheel). Shame.

The essence to the post office the cost price of the device, not to mention the uncertain delivery of another copy, probably of comparable quality, I do not even bother to return them. For those like me, do not throw it as far as it's still a micro-sd reader fully functional for your PC or laptop.

The cheap is no excuse for selling defective products. I'm going to buy an MP3 player more expensive and quality, but for the principle, it will not be on that I bought at Amazon for years closed eyes and confidently and that, for once, I am very disappointed.