Beautifully designed to the width of an outstretched hand with clearly positioned and profiled coloured keys, including a highly visible 12 Digit Two-Colour Display even at 1m distance the 1231X sets the scene for use by Professionals. Features: -12-digit LCD display/2-colour (negatives in red). -2 colour printing (black/red). -Printing speed: 3.5 lines per second. -Professional keyboard.