[MFi Certified] COSMOS &reg; Ultra Slim 3100mah External Protective iPhone 6 (4.7&rdquo;) Rechargeable Battery Charger Case / Extended Backup Battery Pack Cover Power Case with 2 Color Frames [Fits All 4.7 Inch Apple iPhone 6 / Full iOS 8 Compatibility / No Signal Reduction] (Black - Black & Clear Frames)