This is the specifications of the Wacom Intuos 4 PTK-1240:
The Wacom Intuos4 PTK-1240 is a large graphics tablet that is ideal for professional artists and designers. It offers a large active area for drawing and sketching, as well as high levels of pressure sensitivity and tilt recognition for precise control. The ExpressKeys and Touch Ring provide additional shortcuts and customization options, making it easy to work efficiently.
The Wacom Intuos4 PTK-1240 is compatible with both Windows and Mac computers.