Top positive review
Good 0.5 point pen... not as smooth as 0.7 point V7... ink not water resistant...
6 November 2016
Very free flowing pen. Excellent writing experience. Tilted writing at 45deg angle is not as smooth as V7.
Four stars is only because the ink is not water resistant. This is the only issue that bothered me and i do not recommend it for students writing exams.
For Comparison I have taken Pilot V7, Cell Tristar & Pilot O5 (see image):
1) The Tristar is water resistant the others are not.
2) V7 is 0.7 point the others are 0.5 point. O5 0.5 point is better than Tristar.