1900 mAh Portable Black Ultra Slim External Backup Charger Battery Case For Apple iPhone 4 4G & 4S
Protection cover design,Using the cell phone while charging. Matte sufrace process with its distinctive feel texture. Unique switch design,control the charging start at any timeSpecifications:Capacity: 19000mAh Li-PolymerOutput Voltage : 5.0VOutput Current : 500mA maxLED indication for Battery Status