ZAGG Slim Book Ultrathin Case, Hinged with Detachable Bluetooth Keyboard for Apple iPad Air - Black Thin: Its ultrathin design is easy to carry when you're on the go Bright: Backlit, island-style keys maximize space for faster, more natural typing, even in low-light situations Multi-Angled: Its unique hinge offers 135 degrees of viewing angles, just like a laptop Thin: Its ultrathin design is easy to carry when you're on the go. Bright: Backlit, island-style keys maximize space for faster, more natural typing, even in low-light situations. Multi-Angled: Its unique hinge offers 135 degrees of viewing angles, just like a laptop. Keyboard Mode offers backlit keys and the largest typing area for fast, accurate typing. Video Mode holds the iPad securely at virtually any viewing angle. Case Mode protects the iPad and allows users to quickly separate it from the keyboard. Book Mode helps protect the iPad while making reading easy. Lasting: A powerful lithium polymer battery provides up to two years of regular use between charges.