versal Type iPhone Battery Case 2200mAh Power Bank External Backup Battery Charger‎.‎Ulta thin portable wireless power bank‎.‎One switch on/off button for easy operation‎,‎ LED lights to indicate charge status‎.‎Perfect ergonomical design with smooth hand feel‎.‎ Smaller than the business card‎,‎ can be put in a pocket‎.‎Side extra USB port can help do other emergency charging for other USB devices when needed