MoKo Battery Case for iPhone 6s / 6 - Portable 3100mAh Battery Pack External Rechargeable Protective Charger Charging Case for iPhone 6s / 6 4.7 Inch [MFI Apple Certified] BLACK Rechargeable 3100mAh Li-polymer battery more than doubles on-go-power for your iPhone. Includes 2 interchangeable protective bumper frames: Crystal clear and Black. LED Power indicators let you check the power status at a glance. Apple MFI Certified: Fully Supports iPhone 6 \ 6S and all iOS versions. SYNC data while refilling your battery at the same time, through the case. One Year warranty. Search "MoKo iPhone 6 \ 6S battery case" for other styles and color options offered by BSCstore.