Hello friends I am Ashutosh handa and today I m here to share my reviews fot Sony Walkman NWZ-B142F.you get a graet battery backup in this device I use this device for past few months I m highly addicted to music thats why I use this device and the device is compeletly satisfy me so I recommend this device.it has a goid look mp3player so u can also make shine in front of your friends.thank you