Although I purchased it incorrectly as Knock type, I keep it on the pen stand of the desk of the office. I usually use the pen I put in my pocket but I use it when I forget it in my pocket. If it is for pen stand in the office, it may be with cap, and we do not bring anyone (it is often that someone does not come back with knock expression), so it was good to buy as a result.
I mainly use it for office work. My favorite is to write postcards well, so it's comfortable to write to postcards. Pen shape / grip condition like the fountain pen · ink output condition · thickness. Anyway, my best favorite, I bought cheaply when I went to Korea trip, but Monotaro was cheap and I was surprised. I just purchased it without hesitation as it was running out. I tried purchasing blue & red because it was awesome.