• Blog
  • Shop
  • Podcast
  • Resources
  • About
  • Archive
  • Contact
  • Cart
  • Sign In My Account
Menu

The Gentleman Stationer

Vintage Living in the Modern World.
  • Blog
  • Shop
  • Podcast
  • Resources
  • About
  • Archive
  • Contact
  • Cart
  • Sign In My Account

First Impressions: Hands-on with the Uni Zento Signature!

April 11, 2026

Ok, so I finally got my hands on a Uni Zento Signature - Uni’s latest “it” gel pen that flies off shelves so fast in Japan that it hardly ever makes it’s way into the U.S. market, and when it does, it often appears at grossly inflated secondary market prices. (I’ve seen these pens priced as high as $200+, but fortunately as they become more available this degree of silliness is less common.) I’ve been trying to get my hands on a Zento Signature for about a year, and when Vanness Pens obtained a (very) small shipment for the California Pen Show in February, I managed to snag one of the black ones in the .5mm tip size. After a few weeks of use, here are my initial impressions.

What I Like About the Uni Zento Signature

  • Magnetic Cap. The Zento Signature features a magnetic cap which closes and posts securely. This feature alone makes the Signature an excellent pen for everyday carry. Standard “click” gel pens can accidentally deploy in your bag or pocket, causing a mess. You don’t have that issue with the Signature.

  • Sturdy Clip. The Signature features an upgraded metal clip that’s a bit heavier duty than the wire clip on the standard and Flow pens. I haven’t had the pen long enough to know whether it will make a real long-term difference in terms of durability, but it feels secure and does lend the pen a higher-end look.

  • Matte Grip. The grip section on the Zento Signature has a matte texture that reduces slippage in the hand. The metal barrel on the Zento Flow might be a touch slick for some people. If you’re writing outdoors, in a variable travel environment, or if you tend to have sweaty hands, the Signature is a good choice.

  • All-Metal Construction. The Zento Signature feels durable due to the nearly all-metal construction, including interior metal threads. There’s even an o-ring to prevent leakage if a refill goes bust.

The Zento Signature posted in-hand. The grip section is comfortable, though I find the overall shape of the pen a touch short for my hand.

The Uni Zento Flow, which is a traditional click pen format with a lower aluminum barrel.

Do I Prefer the Zento Signature Over the Zento Flow? A Few Considerations that have me leaning towards the Zento flow

  • Price Point. Even at the standard pricing ($30), the Zento Signature is nearly 3x more expensive than the Zento Flow, and 10x more expensive than the standard Zento. All three pens use the same refill, so in order to justify the price difference, you need to really like the format. I would NOT suggest that anyone pay $100-200 on the secondary market for a Zento Signature under any circumstances - it was never intended to be sold at this price point and the value proposition is not there.

  • Balance. I don’t consider the Zento Signature unbalanced, but for longer writing sessions the Zento Flow fits my hand better. Posted, the Signature is only slightly shorter, but the difference in weight and balance feels more pronounced. I think I prefer the more front-weighted Flow overall.

  • Hype. The stationery industry goes crazy over certain products from time to time, and I’m usually able to ignore the hype but with the Zento Signature it can be impossible. This pen has drawn so much attention that I dislike using it in public and carrying it with me at shows and meetups due to the number of people constantly asking whether I’m willing to sell it. (I’m not.) In my opinion, this pen is nice but does not justify the level of social media FOMO-driven hype that it receives.

Most of the price point of the Zento Signature goes into the metal barrel. As you can see, the barrel threads are metal as opposed to plastic, which suggests that the pen will be more durable over time as one would expect for the price point. That said, both pens use the same refill, so your writing experience is nearly identical.

Further Reading on the Uni Zento Lineup

I’ve previously reviewed the standard Uni Zento and the “mid-tier” Zento Flow, which uses the same refill and features an upgraded metal barrel in five different finishes. I think the Zento refill is excellent, and consider these pens exceptionally good everyday writers for those who value a smooth writing experience. The Zento is designed to be “low friction”, and performs as advertised. At the end of the day, is the coveted Zento Signature 2-3x as good as the Flow? If you’re just looking to write with a Zento, probably not, but if you are looking for a pocket-carry EDC pen with a magnetic cap, at $30 the Zento Signature is a reasonable choice as long as you can find one at standard pricing.

Uni Zento Writing Sample .5mm

We currently have a fairly large selection of Standard Zentos and Zento Flow pens in stock in our shop, including the cool “Birch” Flow that pairs a white upper barrel with etched aluminum. We recently added some .7mm options for those who prefer a wider tip size. Unfortunately, we do not have any Zento Signatures available for sale as they remain largely unavailable in the U.S. Our friends at Vanness Pens are also currently sold out. Please note that I am not interested in selling my personal pen and generally do not respond to emails and comments regarding purchases from my personal collection. Thank you for understanding!

The Gentleman Stationer is supported by purchases from the T.G.S. Curated Shop and pledges via the T.G.S. Patreon Program. You can also come visit us at our physical stationery store in Nashville, Tennessee.

In Pens Tags Uni Zento, Uni Zento Flow, Uni Zento Signature, Pen Review
Comment

New Arrivals: Uni Zento Restock, Pilot G-Tech-C, and More Pilot Hi-Tec-C Coleto Multi Pens!

November 11, 2025

The Uni Zento has been one of the more in-demand gel pens on the market, so much that we sold through an entire shipment in a matter of weeks a couple of months ago. We currently have more, including most colors of the Zento Flow, which features the upgraded metal barrel, as well as the standard Zento in multiple colors. The capped Zento Signature remains elusive, but I’m trying…. Read more about the Zento and what makes it unique in this recent post. I also talked a bit about it in this YouTube video.

Fans of the Pilot Hi-Tec-C are also in luck, as we have more of the higher-end Coleto 1000 multi pen barrels, all of the Hi-Tec-C Coleto refills (including the mechanical pencil inserts), and now the G-Tec-C4 .4mm gel pen (which is the U.S. market equivalent of the .4mm Japanese Pilot Hi-Tec-C.) These are all in stock and available for purchase both in the online shop and in-person in our Nashville location.

We will be open this week in our Nashville store normal hours, 1-6pm Thursday and Friday and 10am-6pm on Saturday. Be sure to come see us as we will be getting ready to jumpstart the holiday shopping season soon!

In Pens, TGS Curated Shop Tags Uni Zento, Uni Zento Flow, Pilot Hi-Tec-C, Pilot Hi-Tec-C Coleto, TGS Curated Shop

Pen Review: Is the Uni Zento Gel Pen Worth the Hype?

August 16, 2025

One of the most-discussed releases of the past year has been the Uni Zento gel pen, which has captured the attention of the stationery communities in both Japan and the U.S. In particular, the “Zento Signature” - which features a cap as opposed to your typical retractable mechanism - prompted rushes reminiscent of the Uni Kuru Toga Dive mechanical pencil. While I’ve yet to get my hands on one of these “upscale” models for an extended test drive, I’ve had the opportunity to write with both the standard Zento and the slightly upgraded “Zento Flow” (both retractables) for a couple of weeks now. While I’m not sure I would pay more than standard retail for any version of this pen, the Zento is an excellent gel pen and so far I prefer it over the Uni One and any of the basic Uni Signo “office” inks.

The Uni Zento Flow Gel Pen in the Jade Colorway, in-hand. I also went with a Canary Yellow standard Zento.

So What’s the Story Behind the Zento?

Uni’s gel pen lineup can be confusing - the company has released multiple iterations of your standard black/blue/red gel pen and left them all on the market simultaneously, the only difference supposedly being different inks that to most people will seem quite similar. The Zento is advertised as formulated for “stress free” writing, which apparently refers to a combination of smoothness and cushion. The Zento is indeed quite comfortable to write with - the pen feels very smooth with little to no scratch, and the ink glides on the page and dries instantaneously. The ink is also advertised as formulated to reduce feathering and bleedthrough, and I can confirm there is none. Now was this actually so much of an issue with Uni’s other pens that it warranted an entirely new product line? I’m not sure, but it doesn’t change the fact that the Zento is good.

Ink Comparison: Zento Black Ink (top) has a more matte look, vs. the glossy black Uni One (bottom). To draw a comparison to fountain pen inks, I’d compare the Zento ink to something like Platinum Carbon Black or Sailor Kiwa-Guro, while the Uni One ink is more of a glossy black like Aurora.

How Does the Uni Zento Compare to the Uni One?

As I noted, in addition to the Zento, Uni released the Uni One a few years ago, which was supposed to be another “specialty” ink that’s a step above your standard office gel pen. I’ve found the Uni One and the Zento to offer somewhat different writing experiences, so I can confirm the distinction is real. The One contains an ink formulated to be extremely dark (standard black) and/or vivid (other colors), with a glossier finish. So if you prefer a darker, wet look to your gel ink, you might prefer the Uni One, especially if you’re using the pen for drawing or doing layout work in a bullet journal or planner. The Zento seems better suited to pure writing, as it lays down a remarkably smooth line and, in my opinion, has the more comfortable barrel.

Update: You can now view the Uni Zento companion video review on our YouTube Channel!

The array of barrel colors available for the Uni Zento standard. There are some great colors available.

Takeaways and Where to Buy

Uni makes a great gel pen, and I surprised myself with how much I enjoyed the Zento as I don’t typically do much writing with gel ink beyond quick notes and annotations. I strongly prefer the barrel on the Zento over the One and pretty much any other standard gel pen - it’s got a nice balance, the perfect diameter for my hand, and on the standard model, a soft texture that’s comfortable over longer sessions. I will also say that the clips on both the Uni Zento and the Uni One are excellent - the wire design is highly functional - with the slight edge to the Zento as it feels a bit tighter on both the standard model and the Flow. That said, if you prefer the barrel on the One but want to try Zento ink, the Zento refills fit the Uni One, and vice-versa.

We currently have a large selection of the standard Uni Zento gel pens available in our shop, as well as a smaller selection of the Zento Flow, with the upgraded barrels. Zentos are priced at $3 and $11, respectively, with extra refills available for $1.75. You can get a nice pen at a reasonable price, or pick up a refill that will fit one of your existing Uni pen bodies.

Come see these pens in person! Visit our shop, currently open Thursday and Friday 1-6pm, and Saturdays 10-6pm. Check this page to keep up to date on our current hours, which may change depending on travel schedules during pen show season.

You can tell the difference between the clip on a Zento (top and bottom) because it has the round holder, whereas the holder on the One is rectangular.

In Pens Tags Uni Zento, Gel Pens, Uni, Uni Zento Flow, Pen Review
1 Comment
Store Hours and Events
Shop T.G.S. Online
Updated 2026 "Best Pens" Guide
No results found
On The Paper Trail: Live In Nashville Event Tickets Now Available!
Hierarchies of Fountain Pen Friendly Paper

Join Our Patreon!
Subscribe to the TGS E-mail List

Featured Posts

Featured
Five-Foundational-Fountain-Pens.jpeg
April 22, 2026
T.G.S. 12th Anniversary: 5 Fountain Pens Everyone Should Experience
April 22, 2026
April 22, 2026
Pilot-Custom-Series-Pens-overview.jpg
March 14, 2026
The Pilot "Custom" Series: An Overview of Some of My Favorite Fountain Pens
March 14, 2026
March 14, 2026
Pentel-Sign-Pen-Cover.JPG
February 28, 2026
Pen Review: The Pentel Sign Pen (Craft Design Technology Version)
February 28, 2026
February 28, 2026
The Gentleman Stationer RSS

View Cart

© Digital Divide Media, LLC, 2014-present.

All content is the exclusive property of Digital Divide Media, LLC, d/b/a The Gentleman Stationer, including “The Gentleman Stationer” website and trademark, and should not be reproduced without express written permission.  All rights reserved.

All content containing paid advertising, affiliate links, or sponsored content will be plainly disclosed by a disclaimer when/if featured.

Contact Information

Store Shipping Policy and Return Policy

Privacy Policy

Cookie Policy

Terms and Conditions

Powered by Squarespace