After a few days of use, mp4 player is very pleasant and efficient. The purpose of this purchase (a gift) was essentially listening to mp3 and have a readable display for navigation. The more of this product is the ability to add memory via Micro SD. So ended the internal memory limit. The least is that it does not keep the memory of what was heard when it is switched off: you have to start all the selections when the back on which is tedious. Nice little gadget: it also camera.