Wacom One CTL-672/KO-CX is an 8.5 inch x 5.3 inch graphic tablet which can be connected to a computer via a USB port. The tablet comes with a pressure sensitive cordless pen. Once connected to a computer via a USB port, pen and tablet work like a mouse on a mouse pad, giving a very fine pointer on the screen. This is suitable for drawing work on programs like Krita, Inkscape and Gimp.
Wacom One CTL-672/KO-CX does not work out of box under Linux. For making the tablet work we need to install the input-wacom driver. The detailed installation instructions are available at Installing input wacom from source.