The Esys 40 (also known as esys40) is a braille notetaker, refreshable braille display and braille keyboard designed for use by individuals who are blind or have vision. This portable unit has a large display with 40 braille cells with 40 integrated cursor routing keys located above the braille cells. The esys40 includes a ten-key braille keyboard with which the user types notes. The unit can be used independently or connected to a PC work station via Bluetooth or USB. It can be used to read and write text messages and operate a mobile phone, personal digital assistant (PDA), personal computer (PC), or notetaker. The user can use the two navigation joysticks to control Microsoft Windows menus and the four navigation wheels to browse through information. The esys40 can also be used as a notetaker with its built-in Micro SD-card slot. The Esys 40 can also be used as a notetaker with its built-in programming and micro SD card slot. Installed applications include Notepad, Agenda, Alarm Clock, Calculator and Tools. The Esys 40 is compatible with devices running many screen reader programs, including Jaws, Window Eyes, Supernova, Cobra v.9.x or higher, Mobile Speak, Mobile Speak Pocket, Talks, and VoiceOver. A 2 gigabytes (GB) micro SD card and a protective softcase for traveling are included. COMPATIBILITY: IBM PC or compatible or Apple Macintosh computers or iPod, iPhone and iPad. SYSTEM REQUIREMENTS: Microsoft Windows; Linux; Mac OS X; or iOS. POWER: Built-in lithium-ion rechargeable battery. Charging is through USB or through an AC power adapter (included). Operating time is up to 17 hours. DIMENSIONS (WxDxH): 12.8 x 3.39 x 0.79 inches. WEIGHT: 1.1 pounds. WARRANTY: Two-year warranty.