uNu Power DX-1700B External Battery Case for iPhone 4 4S - Matte Black ( Fits All Version iPhone 4/4S)

uNu Power DX-1700B External Battery Case for iPhone 4 4S - Matte Black ( Fits All Version iPhone 4/4S) by uNu (28)Buy new: $44.95 $34.99 4 used & new from $28.99(Visit the Most Wished For in Batteries list for authoritative information on this product's current rank.)Review & DescriptionFeatures Highlights:- Apple Certified 30-Pin Connector- Built-in Battery + Protective Case + Signal Problem