From the manufacturer:
- Universal pen for use on almost all surfaces
- Suitable for overhead projection
- Can be wiped off film using a damp cloth
- Water-soluble ink
- Fast-drying
- PP barrel and cap guarantee long service life
- Airplane-safe - automatic pressure equalization prevents pen from leaking on board aircraft
- Superb colour brilliancy
- Black is lightfast
- Line width S - superfine, approx. 0.4 mm
- Line width M - medium, approx. 1.0 mm