I am using Sony NWZ S543 music player for around 2 years now and I thought now is the time to write a review about it.First of all let me talk about the battery backup. The battery backup was fine before but now it lasts hardly for 2 hours. The earphones provided are cheap ones and are not that good in terms of sound. There is no option for deleting a song or video from this device. I think that this is a major drawback of this device. Other features of this product are fine except this feature. The device might have been priced at 3k approx. but it is actually priced at 5k. So it is upto you guys to decide whether to buy or not.