Since the opaque ink, vivid color, even on the black or dark color, overwriting possible. Plastic, can be written metal, glass, and photos on a variety of things, excellent light resistance, does not flow into the water if Kawake. Since the water-based ink, it does not have bad smell. Vivid color, such as a poster color Since the opaque ink, vivid color, even on the black or dark color, overwriting possible. Plastic, can be written metal, glass, and photos on a variety of things, excellent light resistance, does not flow into the water if Kawake. Since the water-based ink, it does not have bad smell.