---
product_id: 39309517
title: "Signo Standard Gel Ink Ballpoint Pen UM-100 (UM100.64), Blue Black, 0.5mm, 6 pens per Pack (Japan Import) [Komainu-Dou Original Package]"
brand: "uni-ball"
price: "฿1068"
currency: THB
in_stock: true
reviews_count: 8
category: "Uni Ball"
url: https://www.desertcart.co.th/products/39309517-signo-standard-gel-ink-ballpoint-pen-um-100-um100-64
store_origin: TH
region: Thailand
---

# Pack of 6 0.5mm fine point Japan import Signo Standard Gel Ink Ballpoint Pen UM-100 (UM100.64), Blue Black, 0.5mm, 6 pens per Pack (Japan Import) [Komainu-Dou Original Package]

**Brand:** uni-ball
**Price:** ฿1068
**Availability:** ✅ In Stock

## Summary

> 🖊️ Write Your Legacy with Style!

## Quick Answers

- **What is this?** Signo Standard Gel Ink Ballpoint Pen UM-100 (UM100.64), Blue Black, 0.5mm, 6 pens per Pack (Japan Import) [Komainu-Dou Original Package] by uni-ball
- **How much does it cost?** ฿1068 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/39309517-signo-standard-gel-ink-ballpoint-pen-um-100-um100-64)

## 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

- • **Elevate Your Writing:** Experience the smooth glide of gel ink for effortless note-taking.
- • **Stylish & Functional:** Sleek design in sophisticated blue-black for a professional look.
- • **Quality You Can Trust:** Crafted by Mitsubishi Pencil Co., Ltd., a name synonymous with excellence.
- • **Snap Closure Convenience:** Keep your pen secure and ready for action with a reliable snap closure.
- • **Precision at Your Fingertips:** Fine 0.5mm point ensures crisp, clear lines every time.

## Overview

The Uni-Ball Signo Standard Gel Ink Ballpoint Pen UM-100 offers a premium writing experience with its fine 0.5mm point and smooth gel ink. This pack of 6 pens, imported from Japan, features a sleek blue-black design and a convenient snap closure, making it the perfect choice for professionals who value quality and style in their writing instruments.

## Description

desertcart.com: Uni-ball Signo Standard Gel Ink Ballpoint Pen UM-100 (UM100.64), Blue Black, 0.5mm, 6 pens per Pack (Japan Import) [Komainu-Dou Original Package] : Office Products

Review: I love these pens - I can't remember when I first came across Uni-Ball Signo pens from Japan, but I absolutely LOVE them. Of all the hundreds of pens I have (yes, I have a problem - they're my addiction), I prefer the ones with micro points and these pens have some of the best. They write very smoothly without a skip or leaving a glop of ink like some cheap rollerball points can do. Even if you tend to have very small, cramped handwriting, these pens are so fine that what you write is still easy to read. Ink dries quickly so there are no smears, and it doesn't seep through to the other side of the paper. This blue-black ink is equivalent to a dark navy, and this pen also comes in other lovely colors that are a nice change from the usual bright red, blue, or black. Being such fine point, these pens aren't the best for use on multiple part carbon(less) forms as if you press hard to make sure the imprint goes all the way through, you can tear the top sheet of paper with the minute-point of the pen.
Review: Best pen - Awesome pen clean lines dark color light weight makes even the worst hand writing looks neater

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01N4CN1N2 |
| Best Sellers Rank | #93,160 in Office Products ( See Top 100 in Office Products ) #1,783 in Gel Ink Pens |
| Brand | Uni-Ball |
| Closure | Snap |
| Color | Blue Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (132) |
| Date First Available | December 10, 2016 |
| Grip Type | Contoured |
| Ink Color | Blue,Black |
| Is Discontinued By Manufacturer | No |
| Item Weight | 2.56 ounces |
| Item model number | SG_B01N4CN1N2_US |
| Line Size | 0.5 Millimeters |
| Manufacturer | Mitsubishi Pencil Co., Ltd. |
| Manufacturer Part Number | UM100.64/6p |
| Material Type | Plastic |
| Number of Items | 6 |
| Point Type | ball tip |
| Product Dimensions | 5.85 x 0.39 x 2.73 inches |
| Size | 1 Count (Pack of 6) |

## Product Details

- **Age Range (Description):** teens, adults
- **Brand:** Uni-Ball
- **Color:** Blue Black
- **Ink Color:** Blue,Black
- **Writing Instrument Form:** Ballpoint Pen

## Images

![Signo Standard Gel Ink Ballpoint Pen UM-100 (UM100.64), Blue Black, 0.5mm, 6 pens per Pack (Japan Import) [Komainu-Dou Original Package] - Image 1](https://m.media-amazon.com/images/I/81wB5iWHSdL.jpg)

## Questions & Answers

**Q: What color is the ink?**
A: Blue-Black

## Customer Reviews

### ⭐⭐⭐⭐⭐ I love these pens
*by R***6 on October 8, 2020*

I can't remember when I first came across Uni-Ball Signo pens from Japan, but I absolutely LOVE them. Of all the hundreds of pens I have (yes, I have a problem - they're my addiction), I prefer the ones with micro points and these pens have some of the best. They write very smoothly without a skip or leaving a glop of ink like some cheap rollerball points can do. Even if you tend to have very small, cramped handwriting, these pens are so fine that what you write is still easy to read. Ink dries quickly so there are no smears, and it doesn't seep through to the other side of the paper. This blue-black ink is equivalent to a dark navy, and this pen also comes in other lovely colors that are a nice change from the usual bright red, blue, or black. Being such fine point, these pens aren't the best for use on multiple part carbon(less) forms as if you press hard to make sure the imprint goes all the way through, you can tear the top sheet of paper with the minute-point of the pen.

### ⭐⭐⭐⭐⭐ Best pen
*by J***J on August 28, 2025*

Awesome pen clean lines dark color light weight makes even the worst hand writing looks neater

### ⭐⭐⭐⭐⭐ Only Pen I Want Now
*by G***L on September 8, 2022*

This review is for the Uni-Ball Signo (UM100.64), Blue Black, 0.5mm. This pen is practically perfect. Normally I really can't stand gel ink, but this ink writes very smoothly and also dries quickly. Even though it's a fine tip it never clogs or skips while writing. I can get extremely neat lines from this pen. I was initially worried about ordering the blue color, but it turns out this is a really "professional" blue. Dark in tone. Actually, I've come to prefer it now over black. As long as these pens are for sale they will be the only ones I buy. Worth the relatively high price point.

## Frequently Bought Together

- Uni-ball Signo Standard Gel Ink Ballpoint Pen UM-100 (UM100.64), Blue Black, 0.5mm, 6 pens per Pack (Japan Import) [Komainu-Dou Original Package]
- Uni-ball Signo UM-100 Gel Ink Pen - 0.5 mm -10 Pcs (Black)
- Uni-ball Signo UM-100 0.5mm Gel Ink Rollerball Pen, Red (10 pcs Box)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-03-05*