The sony cp v3a 3000mah li ion polymer power bank white can charge your smart phone mp3 player digital camera or other device on the go make calls and play games as your smartphone charges with 15a output for quick charging the sony cp v3a is small enough to always have an emergency power boost in your pocket so youll be able to pick it up pop it in your bag and go anywhere always keep on top of your device charging with the useful led indicators the green indicator tells you when