Marker filled with OHP permanent ink, suitable for labeling and marking foil, plastic, glass, metal, and other non-absorbent, transparent, and light-colored surfaces. The quick-drying, light-resistant ink is smudge-proof and water-resistant, and can be removed with alcohol if necessary. The ink has high light transmission, which allows for clear and accurate reproduction during projection. Thanks to the practical clip on the cap, the marker does not roll away and can be attached to a pocket.