I purchase this BMS 003 MP4 player from a local shop. The battery backup of this MP4 player is really bad initially it gives up to 1 hours backup but within a 1 week it gives backup near about 10 minutes. If talking about sound quality the earphones comes with it is the worst earphone I ever used. The earphone has no sound clarity bass is very poor trouble is too high and even not comfortable for the earphones you cannot wear it for long hours. Design is not attractive and build quality is very poor even after few days it's buttons stop working it needs hard press for functioning. This MP4 player is easy to use because it has few functionalities.