Factory-Outlet Backup External Battery Charger Case Cover 1900mAh For Iphone 4 4G 4S power bank (Red) 100% Brand New, High quality Iphone 4 4S 4G external battery charging case Full body coverage protection for your iphone,Works as both an extended iphone battery se and a protection case Protective and powerful,Lightweight, thin design. Capacity:1900 mAh Color:Black/ White/Orange/Pink/Black+Blue/Black+Green/Red/Yellow/Gray/Blue/Green/Rose/Lavender/Skyblue/Purple