R means RICH, which means that the ink color is thicker and more vivid. The ink density is 27% higher than that of the regular series, and when writing textbooks or notes, important parts are easier to see clearly.
Both the pen body and the pen clip are designed in a fresh and simple white color, and the pressed part is the color of the ink.
Red, pink and orange inks can be used as secret notes, hidden by red film, very suitable for learning or memorizing new words.
