At the beginning, so after a few minutes already, the color had changed to gray at the top of black, as the tip would wear. Under the color layer was a thin gray film which then became unresponsive as accurate. The film has been slowly worn away, so I removed it. Now however, wears nothing more and the pen works very precisely.
4 stars there for a shock because of the short moment, but rather because the layer below this film which I use now, not as comfortable using the touch screen slides as before, when the film was still on it.
Probably self-inflicted because you possibly could it be the film.
Nevertheless, for the price I'm satisfied anyway!
