My go-to marking tool. Extra fine line, water soluble - can be washed out or erased. Get a free mechanical pencil with each refill. Five colors, 6 ceramic "leads" in each container. (Click picture to read more, get link for free Pencil Pocket pattern.)
Same ceramic leads as the Bohin Marker, and you'll get 2 white, 2 pink, and two green. Pencil has mechanism for only ONE at a time. Still, a good way to try out marking with ceramic color.