The Uniball Zento Signature on a stack of notebooks. Image Anthony Nelzin-Santos.
Lyon (France), 2026-06.

26W23 ✠

07-06-26Z10:30

The Uniball Zento Signature is as good as they say

They say ″the hype is real″, but more often than not, the hype is entirely fabricated. The more a product is hyped on Reddit and other places, the greater the chance it’s a marketing psyop. Unless that product happens to be the Uniball Zento Signature rollerball, in which case the hype is absolutely real.

The original Zento is a basic retractable plastic pen that you’ll find at your local stationery store for around €2. It’s so generic that if you’re not careful, you might pick a One F instead. Its only distinguishing feature is its refill — Uniball describes it as a “next-generation water-based” formulation, but thanks to the use of non-ionic surfactants, it’s almost as smooth as gel ink.

The Zento Signature uses the exact same refill, so why the hype? Well, because it looks nothing like a basic retractable plastic pen. Its metal construction gives it a premium look and pleasant heft. The grip section is coated in soft-touch plastic, a material that extends to the part of the barrel that’s in contact with the web of your thumb. (Did you know that the distance between your extended thumb and forefinger is called a purlicue? I didn’t.) This makes it a delight to hold.

The barrel taper is the defining feature of the Zento Signature. It gives it its signature look, but also allows the cap to sit so deep it barely changes the length and balance of the pen. Which means that, yes, the Zento Signature isn’t even a retractable pen. The magnets in the cap and ends ensure a satisfying click each time you cap or post the pen. It’s just plain fun, to the point that i might have used it more as a fidget toy than as a pen.

Finally, the clip is made of a flat blade instead of a round wire, but it has the perfect amount of springiness. In the end, apart from the refill, the Zento Signature has nothing in common with the basic Zento. The 0.38 mm tip wouldn’t have been my first choice, but it was my only choice. (My drug dealer brother-in-law had to scour dozens of stationery shops in three Japanese cities before finding a place that still had a few models in stock.)

In keeping with the tight tolerances of the whole pen, the tip wobble is minimal. Uniball could replace its oil-based formulations with the Zento water-based ink and it wouldn’t make that much of a difference. The good old Signo ink is a touch smoother, but it’s close, and the colour is nearly identical. I prefer the One refills, however, as they’re designed to be heavily pigmented. That’s where Uniball really hit the nail on the head: both the Signo and One refills fit in the Zento Signature.

In Japan, the Zento Signature costs twelve times more than the basic Zento, but that makes it only €18. As it’s not readily available elsewhere, resellers jacked the prices up to €40-60 for the basic colours and to more than €100 for the limited finishes. At that inflated price, it’s just not worth it. Let’s hope the hype will die down eventually. Even at €25, it’ll be a killer pen.

BK