Candywirez Case Study AMP Rechargeable Battery Case for iPhone 6/6s - Concrete - Lightning connector output - LED indicators - Micro USB input Apple MFi Certified: Each cable contains a unique, verified serial number and an authorization chip issued by Apple to ensure 100% compatibility with any Lightning device. POWERFUL CHARGE: Up to 120% of battery life - 3000 mAH capacity - Pre Charged and Ready to Use. External Battery provides up to additional 44 hours of Audio Playback/ 11 hours of Video Playback/ 8 hours of Talk Time on 3G and 16 hours of Talk Time on 2G/ 7 hours of Internet Use on 3G and 11 hours on WiFi. PREMIUM QUALITY - Fast charging & Sync through the case. It includes Micro USB Sync and Charge Cable. It also come with an AUX externder and LED indicator. PROTECTIVE CASE - Candywirez Case Study AMP Rechargeable Battery Case is also Shock Proof and protects your phone against heavy impacts. NO WORRY GUARANTEE: One Year Guarantee and Efficient Customer Service. If you have any problems or suggestions, do not hesitate to contact us. Prompt response within 24 hours.