---
product_id: 53785924
title: "Uni-Ball Signo 307 - Fine Retractable Rollerball Pen - 6 Pack - Black - UMN-307"
brand: "uni-ball"
price: "Bs.243"
currency: BOB
in_stock: false
reviews_count: 13
url: https://www.desertcart.bo/products/53785924-uni-ball-signo-307-fine-retractable-rollerball-pen-6-pack
store_origin: BO
region: Bolivia
---

# Water-resistant ink Tamper-resistant 0.7mm fine tip Uni-Ball Signo 307 - Fine Retractable Rollerball Pen - 6 Pack - Black - UMN-307

**Brand:** uni-ball
**Price:** Bs.243
**Availability:** ❌ Out of Stock

## Summary

> 🖊️ Elevate Your Writing Game!

## Quick Answers

- **What is this?** Uni-Ball Signo 307 - Fine Retractable Rollerball Pen - 6 Pack - Black - UMN-307 by uni-ball
- **How much does it cost?** Bs.243 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.bo](https://www.desertcart.bo/products/53785924-uni-ball-signo-307-fine-retractable-rollerball-pen-6-pack)

## 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

- • **Value Pack:** Includes 6 sleek black retractable gel pens.
- • **Ink That Lasts:** Uni's Super Ink is water, light, and tamper-resistant.
- • **Comfort Meets Control:** Textured grip for superior writing comfort.
- • **Write with Confidence:** Experience skip-free writing with the redesigned tip.
- • **Perfect for Professionals:** Ideal for fast-paced note-taking and documentation.

## Overview

The Uni-Ball Signo 307 is a 6-pack of fine retractable rollerball pens designed for professionals who demand quality and reliability. Featuring a 0.7mm nib for precise lines, water and tamper-resistant Super Ink, and a comfortable grip, these pens are perfect for fast-paced environments.

## Description

Featuring uni Super Ink, the Uni-ball Signo 307 Retractable Gel Ink Pen delivers vivid, bold lines that don't skip. Also protects against water, fading, and fraud. The textured grip provides a comfortable, controlled, and sophisticated writing experience that's easy on your hand; so you can write better, longer.

Review: Decent pen - This pen was ok. I originally tried one at work and enjoyed how it wrote. I was hoping to use it for my Zentangles, however it just didn’t really work for that because it didn’t dry quickly enough. However, I do use them daily at work and it does write very nicely. The I k flows easily And it’s a nice thickness. A good pen that I enjoy using for writing... just not that great for doodles and tangles.
Review: Best pen I own - I don’t know if you know this but when you’re left handed, you push the pen across the page instead of pulling it, like the right handed. This jams the ball in most ball points. I used to think pens were ridiculously easy to break. Signo pens hold up to the end of the ink for me. I like the 307 (this pen) more than the 207, because the 207 lets out a little too much ink for most writing tasks and I sometimes smear it while writing. But this pen (the 307) is much better and still has a dark precise print. I would still use either. P.S. The 207 does have a body version that won’t stay open if in your pocket, to protect from leaks when the tip touches the cloth. But the 307 is less likely to do that.

## Features

- The Signo 307 expands upon the highly popular 207 with a redesigned tip, aimed to deliver dense colour and provide skip-free writing, making it perfect for situations where speed is a necessity, such as note-taking.
- Features Uni's high quality "Super Ink", which is not only water and light resistant, but also "Tamper-Resistant", meaning that the ink cannot be washed off using chemicals and solutions used by people to fraudulently modify documents.
- The 0.7mm nib delivers a fine 0.4mm line.
- Textured grip provides superior writing comfort and control
- Includes: 6 black retractable gel pens

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Uni-Ball |
| Brand | Uni-ball |
| Item Weight | 2.25 ounces |
| Product Dimensions | 6.3 x 3.15 x 0.79 inches |
| Item model number | UMN-307 |
| Is Discontinued By Manufacturer | No |
| Color | Black |
| Closure | Retractable |
| Number of Items | 1 |
| Size | 6 Count (Pack of 1) |
| Point Type | Medium |
| Line Size | 0.7 Millimeters |
| Ink Color | Black |
| Manufacturer Part Number | UMN-307 |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** Uni-Ball
- **Color:** Black
- **Ink Color:** Black
- **Material:** gel

## Images

![Uni-Ball Signo 307 - Fine Retractable Rollerball Pen - 6 Pack - Black - UMN-307 - Image 1](https://m.media-amazon.com/images/I/71ND+RmgkXL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Decent pen
*by A***A on April 13, 2021*

This pen was ok. I originally tried one at work and enjoyed how it wrote. I was hoping to use it for my Zentangles, however it just didn’t really work for that because it didn’t dry quickly enough. However, I do use them daily at work and it does write very nicely. The I k flows easily And it’s a nice thickness. A good pen that I enjoy using for writing... just not that great for doodles and tangles.

### ⭐⭐⭐⭐⭐ Best pen I own
*by N***R on April 11, 2018*

I don’t know if you know this but when you’re left handed, you push the pen across the page instead of pulling it, like the right handed. This jams the ball in most ball points. I used to think pens were ridiculously easy to break. Signo pens hold up to the end of the ink for me. I like the 307 (this pen) more than the 207, because the 207 lets out a little too much ink for most writing tasks and I sometimes smear it while writing. But this pen (the 307) is much better and still has a dark precise print. I would still use either. P.S. The 207 does have a body version that won’t stay open if in your pocket, to protect from leaks when the tip touches the cloth. But the 307 is less likely to do that.

### ⭐⭐⭐⭐⭐ Good work!
*by P***S on May 15, 2019*

This does write well, and is fine to handle and write. They haven't failed so soon as cheaper pens, and the number supplied allows for distribution everywhere in my car and home. No ink cartridge or ball point to mess with, and no drip or smear.

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**Shop now:** [https://www.desertcart.bo/products/53785924-uni-ball-signo-307-fine-retractable-rollerball-pen-6-pack](https://www.desertcart.bo/products/53785924-uni-ball-signo-307-fine-retractable-rollerball-pen-6-pack)

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*Product available on Desertcart Bolivia*
*Store origin: BO*
*Last updated: 2026-02-03*