This is the third prong, the I try. A rubber hemisphere stopped working after a short time already, another is suitable as input for tablet / smartphone, but is too short, stiff as a pen and has only one mine. This pen is a good compromise, it is good as a pen with two colors (you can even change easily, I prefer blue and red) to use. To write it sits comfortably in the hand, is of sufficient length and a pleasant weight. The color change is done simple by turning even the sinking of mine. Only the stainless steel surface I do not like so and the clamping spring is too tight a bit. Very pleased I am with the pen in the operation of a touch screen: In 3 different devices each a very pleasant glide, no incorrect entries, even small items can be well made, accurate work is possible. These micro-hemisphere seems to be better than the rubber things, but the long-term viability have to wait.
