Do NOT buy this pen!!! Poor quality; doesn't write well. Each pen comes with a small China sticker that cheapens the look (you have to remove each one and the stickers leave a residue typically). With that being said, the more IMPORTANT thing is that they write poorly! I bought the Neutron pen at the same time; they work great--the Athena pen does not write well and usually get tossed by my clients (who have told me that they are no good and they tossed them). They 'somewhat' work after you scribble with them but it's sporadic. Expect your marketing dollars to be wasted as your clients toss them in the trash after a few attempts to use them.