---
product_id: 161527437
title: "Uni-Ball Signo Um-100 Gel Ink Pen - 0.5 Mm -10 Pcs (Blue)"
brand: "uni-ball"
price: "343.19 DT"
currency: TND
in_stock: true
category: "Uni Ball"
url: https://www.desertcart.tn/products/161527437-uni-ball-signo-um-100-gel-ink-pen-0-5
store_origin: TN
region: Tunisia
---

# Waterproof pigment ink Transparent barrel shows ink level 0.5mm micro tip for precision Uni-Ball Signo Um-100 Gel Ink Pen - 0.5 Mm -10 Pcs (Blue)

**Brand:** uni-ball
**Price:** 343.19 DT
**Availability:** ✅ In Stock

## Summary

> 🖋️ Elevate your writing game with precision and style—because your ideas deserve the best.

## Quick Answers

- **What is this?** Uni-Ball Signo Um-100 Gel Ink Pen - 0.5 Mm -10 Pcs (Blue) by uni-ball
- **How much does it cost?** 343.19 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/161527437-uni-ball-signo-um-100-gel-ink-pen-0-5)

## 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

- • **Write Without Limits:** Uni-Flow system ensures smooth, uninterrupted ink flow until the very last drop—no skips, no smudges.
- • **Precision in Every Stroke:** Micro 0.5mm tip delivers crisp 0.3mm lines for flawless note-taking and professional documents.
- • **Stay Ahead with Waterproof Ink:** Pigment-based waterproof ink guarantees your work stays vibrant and smudge-proof, rain or shine.
- • **Trust in Japanese Craftsmanship:** 100% made in Japan by Mitsubishi Pencil Co. Ltd, a decade-long favorite among discerning professionals.
- • **Ink Visibility for Smart Planning:** See-through barrel lets you monitor ink levels, so you’re never caught off guard during important meetings.

## Overview

The Uni-Ball Signo UM-100 Gel Ink Pen features a precise 0.5mm micro tip that writes a sharp 0.3mm line, equipped with waterproof pigment ink and a patented Uni-Flow system for consistent, smooth writing. Made in Japan by Mitsubishi Pencil Co. Ltd, it combines ergonomic design with a transparent barrel to monitor ink levels, making it a reliable choice for professionals who demand quality and durability.

## Description

A favourite for over 10 years. High-quality and reliable rollerball featuring waterproof pigment ink and 'Uni-Flow' system to ensure a continuous consistent write to the last drop. Stainless-steel tip with tungsten carbide ball. Micro 0.5mm tip ,writes a 0.3mm line. The see through ink barrel lets you see how much ink is left.

## Features

- 100% made in Japan by Mitsubishi Pencil Co.Ltd-Attached With Dbmier A750 Mini Notebook
- Stainless-steel tip with tungsten carbide ball. with 3 colours(black,blue,red).
- Micro 0.5mm tip ,writes a 0.3mm line.The see through ink barrel lets you see how much ink is left.
- High-quality and reliable rollerball featuring waterproof pigment ink and 'Uni-Flow' system to ensure a continuous consistent write to the last drop.
- User friendly,safe and comfortable to use.A favourite for over 10 years.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005644GKK |
| Age Range Description | Adult |
| Best Sellers Rank | 811,407 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 7,786 in Gel Ink Rollerball Pens |
| Body Shape | Cylindrical |
| Brand Name | uni-ball |
| Colour | Blue |
| Customer Reviews | 4.2 4.2 out of 5 stars (124) |
| Drill Point | Extra Fine |
| Grip Type | Ergonomic Grip |
| Ink Base | Water |
| Ink Colour | Blue |
| Is the Product Left or Right Handed? | Left |
| Item Dimensions | 15.8 x 6 x 3 centimetres |
| Item Weight | 12 Grams |
| Line Size | 0.5mm |
| Manufacturer | Uni-ball |
| Material Type | Plastic |
| Model Name | Um 100 |
| Model Number | BC30647 |
| Recommended Uses For Product | Writing, Note-taking |
| Special Features | Waterproof |
| UPC | 701936337238 |
| Writing Instrument Form | Roller Ball Pen |
| Writing Technique | gel ink |

## Product Details

- **Age range (description):** Adult
- **Brand:** uni-ball
- **Colour:** Blue
- **Ink colour:** Blue
- **Item dimensions L x W x H:** 15.8 x 6 x 3 centimetres
- **Material:** Plastic
- **Model name:** Um 100
- **Point type:** Extra Fine
- **Special feature:** Waterproof
- **Writing instrument form:** Roller Ball Pen

## Images

![Uni-Ball Signo Um-100 Gel Ink Pen - 0.5 Mm -10 Pcs (Blue) - Image 1](https://m.media-amazon.com/images/I/81acTpU47oL.jpg)

## Questions & Answers

**Q: Is this 0.5 or 0.7mm？**
A: 0.5. My preferred pen for years.

## Frequently Bought Together

- Uni-ball Signo UM-100 Gel Ink Pen - 0.5 mm -10 Pcs (Blue)
- 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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**Shop now:** [https://www.desertcart.tn/products/161527437-uni-ball-signo-um-100-gel-ink-pen-0-5](https://www.desertcart.tn/products/161527437-uni-ball-signo-um-100-gel-ink-pen-0-5)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-10-16*