iPhone4/4s power pack battery case

GNRF iPhone ultra-thin power pack is the world thinnest and most convenient iPhone backup battery pack ,with the capacity of 1800-3000mAh to charge your iPhone whenever and wherever and extend the battery time by doubling its charging capacity. By using the imported materials, the products are of superior quality .Besides, our product can be upgraded online. With decent and fashionable appearance ,superior quality and competitive price ,our products have become popular in the global market .
iPhone4/4s power pack battery case