With the Samsung Galaxy S II Spare Battery Charging System, you will never have to worry about being stranded with a dead phone. Simply insert the included spare battery into the charging case and plug it into the wall via the included Micro-USB wall charger to give it a charge. When it's fully charged, just pop it in your bag or pocket to extend the talk time of your Samsung Galaxy S II wherever you are. The charging case also converts to a convenient media stand so you can watch movies or view photos in portrait or landscape mode. Phone Compatibility: Galaxy S II (SGH-t989),Other products from A4C