IMPORTANT NOTE: Only compatible with iPhone 6/6s/7/8 (4.7 inch),Not compatible with iPhone 6 Plus/ iPhone 6s Plus and iPhone 7 Plus/8 Plus.Not support Wireless charging.About audio is unstable, and the normal mobile phone version upgrade is 12.1.1, which can be solved.
Advanced Sync-through TECHNOLOGY: Amazing sync-through technology that you can charge your battery case and iPhone 6/6s simultaneously with your existing iPhone charging cable,conveniently sync your iPhone 6/6s/7/8 to your MacBook, PC or laptop without having to take the battery case off.
MAX PROTECTION: The battery case is not only a portable charger, but also a protector for your iphone.Raised sides and hard-shell design maximizes protection to your iPhone 6/6s , durable high- class material to protect your iPhone from scratches, drops, impacts and other daily wear and tear.
LONG BATTERY LIFE: 6000mAh capacity rechargeable built-in lithium polymer battery case provides extra 150%+ power which is equivalent to an additional 8+ hours talk time or 12+ hours web-browsing time. 4 LED lights indicate how much power you have (25%--50%--75%--100%). Power switch allows you to switch on/off the battery case.
100% SATISFACTION GUARANTEED: FNSON also delivers the best service ,we provide 30 days ask-free money back guarantee, and 1 year replacement warranty. If you are not satisfied with our product, please feel free to contact us, we will guide how to use, we will offer full refund or replacement. So you can purchase our products without any risk.