The permanent marker with a chisel tip has a line width of 1 + 4 mm. It features special "cap-off ink," which means the ink does not dry out even when the cap is off for several days. When writing, the ink dries quickly on the surface, has a low odor, and is light resistant as well as water- and wipe-proof. The unique tip is positioned on the barrel rim and cannot be pushed into the marker. It is refillable with refill station 640, and the cap with a clip can be plugged onto the end of the marker.