ZAGG Rugged Book Durable Case, Hinged with Detachable Backlit Keyboard for iPad Air - Black Ultimate Durability: A multi-layered, removable case deflects impact energy to keep your iPad safe no matter where it goes 4 Multi-Function modes protects your iPad and allows you to quickly separate it from the keyboard for maximum utility. (Keyboard, Case, Video, or Book Modes) Keyboard Mode offers backlit keys and the largest typing area for fast, accurate typing. (Air 2 does not offer multi-color), magnets activate sleep/wake function to preserve battery Regular use of one hour per day, using the backlit feature will impact battery life and may require more frequent charging Two-Year Battery: A powerful lithium polymer battery powers the Rugged Book for up to two years between charges A unique magnetic hinge converts your Rugged Book into convenient Keyboard, Video, Case, and Book modes.