---
product_id: 679792092
title: "Zento Gel Ink Rollerball Pens, 4 Black Medium Point Smooth Writing Pens, Colored Japanese Pens, Muted Colors"
brand: "uni-ball"
price: "¥2630"
currency: JPY
in_stock: true
reviews_count: 13
category: "Uni Ball"
url: https://www.desertcart.jp/products/679792092-zento-gel-ink-rollerball-pens-4-black-medium-point-smooth
store_origin: JP
region: Japan
---

# muted, trendy barrel colors for mindful aesthetics 76% recycled barrel material for eco-conscious use 0.7mm medium tip for precise, smooth writing Zento Gel Ink Rollerball Pens, 4 Black Medium Point Smooth Writing Pens, Colored Japanese Pens, Muted Colors

**Brand:** uni-ball
**Price:** ¥2630
**Availability:** ✅ In Stock

## Summary

> 🖋️ Write Boldly, Live Mindfully — The Pen That Keeps Up with You

## Quick Answers

- **What is this?** Zento Gel Ink Rollerball Pens, 4 Black Medium Point Smooth Writing Pens, Colored Japanese Pens, Muted Colors by uni-ball
- **How much does it cost?** ¥2630 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/679792092-zento-gel-ink-rollerball-pens-4-black-medium-point-smooth)

## Best For

- uni-ball enthusiasts

## Why This Product

- Trusted uni-ball brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Eco-Chic Design:** Sleek barrels crafted from 76% recycled materials—write with purpose
- • **Effortless Precision:** Ultra-smooth 0.7mm gel ink tip glides flawlessly on every page
- • **Tranquil Trendsetter:** Curated muted colors evoke calm and elevate your professional style
- • **Smudge-Free Confidence:** Quick-drying vivid ink keeps your notes crisp and clean
- • **Minimalist Meets Functional:** Soft grip and spring-loaded clip combine comfort with on-the-go convenience

## Overview

The uni-ball Zento Gel Ink Rollerball Pens feature a 0.7mm medium tip delivering an ultra-smooth, smudge-resistant writing experience with quick-drying, vivid gel ink. Designed with a sleek, minimalist barrel made from 76% recycled materials, these pens combine eco-conscious craftsmanship with a soft grip and functional spring-loaded clip. Available in thoughtfully muted colors, they perfectly blend style and mindfulness for professionals who demand precision and elegance in every stroke.

## Description

Step into a world of timeless elegance and unparalleled craftsmanship with Uniball, a brand that has woven its legacy into the fabric of fine writing instruments. With a heritage rooted in innovation and a commitment to excellence, Uniball has consistently delivered a writing experience that stands the test of time. Immerse yourself in the art of writing with Uniball's meticulously crafted pens, proudly made in Japan. Our legacy of precision and quality is evident in every stroke, ensuring that your thoughts flow seamlessly onto paper with each movement of the pen. From Gel Pens to Rollerball Pens, Ballpoint Pens to Fineliner Pens, and Mechanical Pencils, Uniball offers a comprehensive range that caters to every writing style and preference. Dive into a world of versatility with Uniball's diverse range of tip sizes, spanning from the ultra-micro 0.38 for intricate detailing, to the bold 1.0 for striking emphasis. Whether you're sketching, journaling, note-taking, or bringing ideas to life, Uniball empowers you to effortlessly transition between strokes, giving your writing a unique dimension that captivates the eye and stirs the soul. As you hold a Uniball pen in your hand, you're not just embracing a writing instrument – you're embracing a legacy of craftsmanship, innovation, and the pursuit of perfection. Each pen is a testament to our dedication to providing you with an unmatched writing experience, where every word is an ode to the art of communication. Start your story with Uniball, where heritage meets modernity, and each stroke is an invitation to immerse yourself in a world of boundless expression. Join a community of discerning individuals who appreciate the value of quality, heritage, and the power of the written word. Experience the magic of Uniball for yourself and discover the joy of writing that transcends time and leaves an indelible mark on every page.

Review: Smooth ink and sleek, minimalist design—perfect for planners! - I really love these pens. The ink flow is incredibly smooth, and the minimalist design looks great. While it maintains the high ink quality you expect from uni-ball, these pens dry much faster and smudge significantly less than others, making them ideal for writing in planners or notebooks. I also really like the design of the clip. If I had one request, I would love the option to buy a pack in a single color. I personally prefer the "boring" look of just all-white or all-black barrels rather than a color assortment. Overall, these are fantastic, high-quality pens.
Review: Amazing and nice looking pens! - I have never loved a pen enough to write a review. I'm obsessed with these! I've tried a lot of gel ink pens and while I have love for my eraseable frixions, for a comfortable nicely designed rollerball this is SO good. It writes very smooth with no skips and I find it very precise - when I write, there isn't any bleed of feathering I sometimes see with gel pens. The barrel is softer so it makes it more comfortable to hold and no smears so far. I definitely wish that there were more ink colors available, so hopefully that is on the way.

## Features

- Retractable 0.7mm medium pens create ultra-smooth writing experience with every stroke.
- Quick-dying, extremely vivid liquid gel ink provides smooth writing flow that prevents smearing.
- Sleek minimalist barrel has a seamless soft grip and is made of 76% recycled material.
- Functional spring-loaded clip easily attaches to pockets and notebooks.
- Thoughtfully curated and on-trend barrel colors evoke a sense of tranquility and mindfulness.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DLX3SYLP |
| Best Sellers Rank | #729 in Office Products ( See Top 100 in Office Products ) #3 in Liquid Ink Rollerball Pens |
| Brand | Uni-Ball |
| Closure | Retractable |
| Color | Muted - Black Ink |
| Customer Reviews | 4.8 4.8 out of 5 stars (716) |
| Date First Available | November 4, 2024 |
| Grip Type | Soft |
| Ink Color | Black |
| Item Weight | 1.76 ounces |
| Item model number | 70662 |
| Line Size | 0.7mm |
| Manufacturer | Uniball |
| Manufacturer Part Number | 70662 |
| Material Type | Recycled Plastic |
| Number of Items | 4 |
| Package Dimensions | 7.52 x 3.7 x 0.63 inches |
| Pencil Lead Degree (Hardness) | HB |
| Point Type | Medium |
| Size | 1 Count (Pack of 4) |

## Product Details

- **Age Range (Description):** Kid
- **Brand:** Uni-Ball
- **Color:** Muted - Black Ink
- **Ink Color:** Black
- **Writing Instrument Form:** Roller Ball Pen

## Images

![Zento Gel Ink Rollerball Pens, 4 Black Medium Point Smooth Writing Pens, Colored Japanese Pens, Muted Colors - Image 1](https://m.media-amazon.com/images/I/71eajiDL7GL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Smooth ink and sleek, minimalist design—perfect for planners!
*by T***P on January 27, 2026*

I really love these pens. The ink flow is incredibly smooth, and the minimalist design looks great. While it maintains the high ink quality you expect from uni-ball, these pens dry much faster and smudge significantly less than others, making them ideal for writing in planners or notebooks. I also really like the design of the clip. If I had one request, I would love the option to buy a pack in a single color. I personally prefer the "boring" look of just all-white or all-black barrels rather than a color assortment. Overall, these are fantastic, high-quality pens.

### ⭐⭐⭐⭐⭐ Amazing and nice looking pens!
*by K***P on October 31, 2025*

I have never loved a pen enough to write a review. I'm obsessed with these! I've tried a lot of gel ink pens and while I have love for my eraseable frixions, for a comfortable nicely designed rollerball this is SO good. It writes very smooth with no skips and I find it very precise - when I write, there isn't any bleed of feathering I sometimes see with gel pens. The barrel is softer so it makes it more comfortable to hold and no smears so far. I definitely wish that there were more ink colors available, so hopefully that is on the way.

### ⭐⭐⭐⭐⭐ Smoooooooth!
*by C***. on January 6, 2026*

Great pens! Smooth writing and a rubbery grip.

## Frequently Bought Together

- uni-ball Zento Gel Ink Rollerball Pens, 4 Black Medium Point Smooth Writing Pens, Colored Japanese Pens, Muted Colors
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- Uni-ball Zento Gel Ink Rollerball Pens, 2 Black Medium Point Smooth Writing Pens, Colored Japanese Pens, Boho Colors

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-03*