iBattz Mojo Armor Removable Battery Case for iPhone 4 and 4S Black 1700mAhX2 fits all version of iPhone 4S/4
Protects your iPhone 4/4s Extends your battery life Includes 2 1700 mAh I9100 Battery Modules Eco-friendly with battery replacement instead of changing the entire battery case 1 Year International Limited Warranty