for iPad Air (3rd gen) and iPad (5th, 6th, 7th, 8th, and 9th gen) iOS shortcut keys and comfortable typing Large, evenly spaced keys that are stretched edge-to-edge will allow you to type for hours without feeling crowded. Featuring an entire row of iOS shortcut keys for media volume controls and other one-tap access Four-year battery life: The Slim Folio powers your keyboard with two swappable coin-cell batteries. With its intelligent power management system, you can use the Slim Folio for up to four years without having to change the batteries (assuming you use it for two hours every day). Bluetooth Low Energy Connectivity: The Slim Folio connects dependable and energy-efficiently via the latest Bluetooth LE wireless technology. The iPad is meticulously protected from spills, scratches, and bumps by the Slim Folio.