---
product_id: 282282135
title: "Uni-ball Signo 307 Retractable Gel Ink Pen, Ultra Micro Point 0.38mm, Blue Ink, UMN-307-38, Value Set of 5"
brand: "uni-ball"
price: "846326₫"
currency: VND
in_stock: true
reviews_count: 5
category: "Uni Ball"
url: https://www.desertcart.vn/products/282282135-uni-ball-signo-307-retractable-gel-ink-pen-ultra-micro
store_origin: VN
region: Vietnam
---

# retractable design for on-the-go ease vibrant blue gel ink, smudge-resistant 0.38mm ultra micro point for precision Uni-ball Signo 307 Retractable Gel Ink Pen, Ultra Micro Point 0.38mm, Blue Ink, UMN-307-38, Value Set of 5

**Brand:** uni-ball
**Price:** 846326₫
**Availability:** ✅ In Stock

## Summary

> 🖋️ Write sharp, write smart — because your ideas deserve precision.

## Quick Answers

- **What is this?** Uni-ball Signo 307 Retractable Gel Ink Pen, Ultra Micro Point 0.38mm, Blue Ink, UMN-307-38, Value Set of 5 by uni-ball
- **How much does it cost?** 846326₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/282282135-uni-ball-signo-307-retractable-gel-ink-pen-ultra-micro)

## 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

- • **Comfort Grip:** Textured rubber grip designed for extended writing sessions without fatigue, perfect for marathon meetings or creative bursts.
- • **Pinpoint Precision:** Ultra micro 0.38mm tip delivers the finest, cleanest lines for flawless note-taking and detailed work.
- • **Value Pack Advantage:** Set of 5 pens means you’re always stocked, ready to impress colleagues and stay ahead in every brainstorming session.
- • **Effortless Portability:** Retractable mechanism protects the tip and fits seamlessly into your busy lifestyle—no cap, no hassle.
- • **Smudge-Free Confidence:** Advanced gel ink formula dries quickly, ensuring your writing stays crisp even when you’re in a hurry.

## Overview

The Uni-ball Signo 307 is a professional-grade retractable gel pen featuring an ultra micro 0.38mm tip and vibrant blue ink that resists smudging. Designed with a textured rubber grip for comfort and a retractable design for convenience, this value set of 5 pens ensures you stay equipped for precise, smooth writing in any fast-paced work environment.

## Description

Uni-ball Signo 307 Retractable Gel Ink Pen, Micro Point 0.38mm, Blue Ink, UMN-307-38, Value Set of 5

Review: Fonctionnent très bien - Belles lignes fines, roule bien par contre comme j'écris beaucoup, l'encre passe très vite mais j'en achèterai à nouveau.
Review: Best Pens - I love these pens. There is nothing better than a pen that writes in a fine line and these are the finest. They have a good grip, too. Will definitely buy them again.

## Features

- Uni-ball Signo 307 Retractable Gel Ink Pen, UMN-307-38
- The diameter of a lead : Micro Point 0.38mm, Color : Blue Ink
- Even if write in a hurry, there is no rubbing of characters, Ink is difficult to accumulate
- Value Set of 5

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B06Y3WFXGD |
| Additional Features | Retractable |
| Age Range Description | Adult |
| Age range (description) | Adult |
| Animal Theme | no animal theme |
| Best Sellers Rank | #11,592 in Office Products ( See Top 100 in Office Products ) #324 in Gel Ink Rollerball Pens |
| Body Shape | Round |
| Brand | uni-ball |
| Brand Name | uni-ball |
| Closure Type | Retractable |
| Color | Blue |
| Colour | Blue |
| Customer Reviews | 4.6 out of 5 stars 364 Reviews |
| Drill Point | Ultra Micro |
| Grip Type | Textured rubber |
| Hand Orientation | Ambidextrous |
| Ink Base | Water |
| Ink Color | Blue |
| Ink colour | Blue |
| Item Diameter | 0.38 Millimeters |
| Item Dimensions | 13.8 x 6 x 1.6 centimeters |
| Item Weight | 0.02 Kilograms |
| Line Size | 0_3mm |
| Manufacturer | Uni-ball |
| Material | Gel |
| Material Type | Gel |
| Model Name | 307 |
| Model Number | SG_B06Y3WFXGD_US |
| Recommended Uses For Product | Writing |
| Style | Refillable |
| UPC | 191308002824 |
| Writing Instrument Form | Ballpoint Pen |
| Writing instrument form | Ballpoint Pen |

## Product Details

- **Age range (description):** Adult
- **Brand:** uni-ball
- **Colour:** Blue
- **Ink colour:** Blue
- **Writing instrument form:** Ballpoint Pen

## Images

![Uni-ball Signo 307 Retractable Gel Ink Pen, Ultra Micro Point 0.38mm, Blue Ink, UMN-307-38, Value Set of 5 - Image 1](https://m.media-amazon.com/images/I/41s2wVFZTOL.jpg)
![Uni-ball Signo 307 Retractable Gel Ink Pen, Ultra Micro Point 0.38mm, Blue Ink, UMN-307-38, Value Set of 5 - Image 2](https://m.media-amazon.com/images/I/21jf8eXiS-L.jpg)
![Uni-ball Signo 307 Retractable Gel Ink Pen, Ultra Micro Point 0.38mm, Blue Ink, UMN-307-38, Value Set of 5 - Image 3](https://m.media-amazon.com/images/I/31yuziYOvSL.jpg)

## Questions & Answers

**Q: Are these refillable?**
A: Yes. They are refillable. For blue ink look for UMR83E.33.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fonctionnent très bien
*by C***N on 4 August 2025*

Belles lignes fines, roule bien par contre comme j'écris beaucoup, l'encre passe très vite mais j'en achèterai à nouveau.

### ⭐⭐⭐⭐⭐ Best Pens
*by P***S on 23 December 2025*

I love these pens. There is nothing better than a pen that writes in a fine line and these are the finest. They have a good grip, too. Will definitely buy them again.

### ⭐⭐⭐⭐⭐ If you like fine tip/point this is your pen!!
*by D***E on 29 January 2025*

This pen writes very smooth. The ease of the motion is wonderful!!

## Frequently Bought Together

- Uni-Ball Signo 307 Retractable Gel Ink Pen, Ultra Micro Point 0.38mm, Blue Ink, UMN-307-38, Value Set of 5
- Uni-ball Signo 307 Retractable Gel Ink Pen, Ultra Micro Point 0.38mm, Black Ink, UMN-307-38, Value Set
- Uniball Gel Pen 12 Pack, 0.38mm Ultra Micro Black Ink, Smooth Writing Office Supplies

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-05-20*