The bottle opening bit is carried out via a notch cut in the hinge side. It took me a couple of tries to figure out how to hold the bottle and the opener right so that the beer didn’t slosh and foam when I opened it. But since I worked out how to pry it against the heal of my hand it’s become one of my favorite openers. Given its peculiar shape as an opener it requires less length to comfortably pry off a crown cap and fits easily in the pocket.
Now if I could just get some money to put in the clip. Apparently that's sold separately.