● It is water-based felt-tip pen does not bleed moves back often to write it on a piece of paper, does not flow through the water if dry! ● Does not smell unpleasant. ● I have adopted a vivid color pigment ink. The write-in / glass / metal and plastic, so I do not damage the aqueous material. ● to a use, you can use different extra-fine and fine print round core. ● The ink cartridge (sold separately), it is possible and economical refill. [How to use] ● You can use tools such as / Calendar / Poster / paper imitation.