The mobile Braille display Notetaker 24 Pro from the company Gaudio has a 24-digit display. This device is compatible with the most common screen readers and Bluetooth devices. It has a notepad, a own file management, a clock and even a scientific Calculator. The Gaudio Braille 24 Pro supports one connection via USB or Bluetooth, has a Micro-SD card slot and a built-in rechargeable battery.