mophie juice pack air - Slim Protective Mobile Battery Pack Case for iPhone 6/6s - Black INCREASED BATTERY LIFE Extend your phones battery life with this rechargeable 2,750mAh lithium-ion polymer battery in a protective cover. It adds 100% more power to your batterys life when used. Make it standby by just clicking the button at the bottom and monitor its status too, with the LED light indicator it comes with. HIGH LEVEL PROTECTION  This hard yet slim phone shell provides your phone with the utmost protection it needs even when not charging. Rubberized supports guard your phones edges from drops and hard falls with superior shock absorption. Feel confident with a phone case that delivers excellent protection while looking great at the same time. EASY TO INSTALL  This juice pack is easy to install. Just separate its top cap and slide your iPhone all the way to the bottom section until the lightning connector is fully inserted into your phone. After that, just put the top cap back on, and your iPhone is good to go. ONE FLIP SWITCH  The handy button located on the back of your case lets you decide when your phone needs the extra power. Battery charge can easily be monitored too with a built-in LED power indicator. Put your juice pack on standby or energize when you need it the most. ADDITIONAL TIME FOR FUN  As the juice pack provides you with 100% more battery power, you get to enjoy: talk time up to 28 additional hours; web browsing up to 20 additional hours; and video playback up to 22 additional hours. Product Dimensions - 2.92 x 6.10 x 0.61 inches This device has a headphone adapter included in the packaging. Enables pass-through charge and sync while connected to a computer. Your phone recharges first and then the juice pack case recharges itself. Charge Vault Technology