... phone extenal batteries 1,Cheaper price 2,100%test before shipping 3,fast delivery NAME:For iphone/ipod/ ... ipad/mobile phone extenal batteries Features: 1. How to charge ... MP3 player …1.Press the “on/off” switch for 3 second ,the LED lines will turn blue ,that ... ...5.After using the powerbank ,press the swicth for 3 second to turn off it ,the LED will ...