2200mAh External Backup Battery Charger Power Bank Cover For HTC One X S720E Black (Note: NOT FOR AT&T, Sprint and T-MOBILE HTC One X!) Charging / sync, simply plug in the USB turn micro USB to the micro USB female dock, connect the USB to a powered USB equipment or computer. Used for charging your Phone anytime and anywhere. Come with a foldable stand for supporting your phone easily. Works as both an external Phone battery set and a protection case. ECOMGEAR(TM) is a trademark. All ECOMGEAR? products are exclusively distributed by itself. ECOMGEAR? trademark is protected by US Trademark Law.