After approximately two weeks, the mechanism is already defective.
The idea is ... okay ... but unfortunately the implementation is bad. I would buy the pen not again.
Alternatively, there is (and I have three of them) of the Pilot Pen Pilot Namiki Vanishing Point "Capless" filler.
Reliable and not get broken. Disadvantage because maybe the clip that could not be sunk and interfere when writing. My wife is so not right. This brings me very well and rightly so.
Conclusion: try.
