Incipio ClamCase+ Keyboard/Cover Case for iPad Air 2 - Space Gray Compatible with iPad Air 2. Charging via power adapter or USB connection. Micro USB to USB cable included. Lithium-ion batter allows for weeks of use on one single charge LED indication lights provide information on battery life, pairing, power activation, charge and Caps Lock. Powerful LEDs illuminate the keyboard, offering three levels of brightness Patented hinge with infinite viewing angles