The black on yellow XL Print American English Bluetooth 3.0 Mini Keyboard from LogicKeyboard is designed for visually impaired or mature-aged Apple iPad, iPhone, and iPod users. It provides a way to type on a real keyboard with letters that are easy to see and locate. The light and compact mini keyboard uses Bluetooth technology to connect to any Bluetooth-compatible device. This keyboard has defined function keys to work with Apple's iOS. You can minimize your typing errors and reduce eyestrain with this keyboard as it has enhanced high contrast markings.