Chester Creek Wireless Large-key WVBB Keyboard The wireless VisionBoard will also help reduce the amount of wire clutter over or around a desktop. They offer long battery life and the same functionality as our wired large-key keyboards. USB, Windows and Mac compatible, FCC CE, RoHS compliant. The Black Wireless large-key keyboard Chester Creek BLACK KEYS WITH WHITE LETTERS - Wireless VisionBoardTM large print computer keyboard offers a big advantage to people who find it painful or difficult to use a traditional keyboard, with applicatio The large key Wireless VisionBoard with large print, improves readability and reduces eyestrain with big 1" square keys and large, bold black-on-white letters and numbers. Users with low vision or functional limitations can increase and improve capabilities with greater comfort and control. Enjoy the added convenience of wirless technology with the only keyboard of its kind. With two models available with either white lettering on black keys or black lettering on white keys. Connector: Wireless micro USB receiver, Safety: FCC CE Approved and Environmental: RoHS Compliant The Wireless VisionBoardTM computer keyboard offers a big advantage to people who find it painful or difficult to use a traditional keyboard, with applications in such places as assistive living communities, manufacturing facilities, special educational institutions, adult daycare and home use. The Wireless VisionBoard improves readability and reduces eyestrain with big 1" square keys and large, bold black-on-white letters and numbers. Users with low vision or functional limitations can increase and improve capabilities with greater comfort and control. Connector: Wireless micro USB receiver Operating System: Windows 98SE, 2000, ME, XP, Vista, Windows 7, MAC OS 10.1.5 and higher