[Apple-Certified] EasyAcc MFI 3500 mAh iPhone 6s/6 Battery Charger Case (4.7 inches), Protective External iPhone 6s/6 Charging Case, iPhone 6s/6 Extended External Battery Pack Power Bank, Rechargeable Battery Case for iPhone 6s/6,Black Made specifically for the iPhone 6, with a style that's reminiscent of Iron Man, a high degree of protection against impact and wear, and soft rubber at the corners that protect against shock and drops, all of which combine to offer 360 protection to your iPhone. The back is raised to prevent slippage, while the surface is sprayed with a rubber coating that is ultra-smooth to the touch. Place your iPhone into the battery case by inserting the Lightning connector into your iPhone's Lightning dock. Extremely safe and environmentally friendly: A high-quality Li-polymer battery cell and smart circuit management prevent problems such as overcharge, overdischarge, and overcurrent. Meets CE, FCC, and RoHS specifications as well, which means that the battery case is certified by both the EU and the US for safety and eco-friendliness. Double your battery life: The built-in 3500 mAh grade-A lithium-polymer battery can provide more than 150% additional battery life to your iPhone 6. Worry-free after-sales service: EasyAcc&reg; provides a 12-month warranty and free lifetime technical support for this battery case.