1byone 3,100 mAh Battery Case for iPhone 6 / 6s, External Protective Charging Case with 2 Colors Frames (Apple MFi Certified), Black

Long Battery Life - The powerful 3,100 mAh Li-polymer rechargeable battery can effectively provide 100%+ extra battery life to your iPhone 6 / 6s, which is equivalent to add 14 + hours talk time or 10+ hours web browsing time. Functional and Portable - With 360 degrees comprehensive bumper design and hard-shell backplate, it protects your iPhone from scratches and other daily tear and wear, yet small and convenient enough to fit easily in your hand or in your pocket. Sync-through Technology - It ensures that you can sync your iPhone to a computer without having to take the battery case off. Simultaneously charge your iPhone and battery case together with the included Micro-USB cable. Intelligent Protection - Protective IC circuit efficiently avoids short-circuit, over-charged and malfunction even under extreme conditions. 2 Optional Frames - Changeable frames of different colors, dress up your iPhone on every single day.