Today I received a Pentel water brush over the mail (I ordered it abroad). It is basically a brush with a water container. This means you don’t have to dip in your brush into water in order to clean it and you can be far more economical with your water when you’re on the go.
I used gouache paint to do the coloring. Afterwards I inked the painting with a Pentel color brush pen. Unfortunately, I made some mistakes while inking. Since it was just a test, it really doesn’t matter, but I mention it anyway.