Devicewear 360 Degree Rotating Swivel Ultra Thin Bluetooth Keyboard Case, Multiple viewing Case/Stand for iPad Air/iPad 5 Macbook style iPad Air accessory: Protective Case Cover with wireless Bluetooth 3.0 ABS Keyboard/Stand 90 hours of continuous work time with built-in Lithium Polymer rechargeable battery, you no longer need to replace batteries. Smart Function enabled so it puts your iPad Air to sleep when closed and wakes it up when opened. Opens to any viewing angle and will rotate 360 degrees for demonstration use in the office or at school. Low profile keyboard is easy to use and optimizes command keys for shortcuts.