---
product_id: 384876442
title: "signo UMN-307 gel ink rollerball retractable pen BLUE liquid ink colour x 1 single pen"
brand: "uni-ball"
price: "₨827"
currency: SCR
in_stock: true
url: https://www.desertcart.sc/products/384876442-signo-umn-307-gel-ink-rollerball-retractable-pen-blue-liquid
store_origin: SC
region: Seychelles
---

# Waterproof & quick-dry ink 0.7mm precision medium nib Fraud-resistant permanent ink signo UMN-307 gel ink rollerball retractable pen BLUE liquid ink colour x 1 single pen

**Brand:** uni-ball
**Price:** ₨827
**Availability:** ✅ In Stock

## Summary

> 🖊️ Write with confidence, seal your legacy.

## Quick Answers

- **What is this?** signo UMN-307 gel ink rollerball retractable pen BLUE liquid ink colour x 1 single pen by uni-ball
- **How much does it cost?** ₨827 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/384876442-signo-umn-307-gel-ink-rollerball-retractable-pen-blue-liquid)

## 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

- • **Precision 0.7mm Nib:** Smooth, consistent lines perfect for detailed notes and essays.
- • **Super Ink Technology:** Waterproof, lightproof, and fraud-resistant for ultimate document security.
- • **Ergonomic Rubber Grip:** Comfort that keeps up with your longest brainstorming sessions.
- • **Trusted by Professionals:** Mitsubishi’s uni-ball quality ensures reliability in every stroke.
- • **Effortless Retractable Design:** No cap, no hassle—always ready to write.

## Overview

The uni-ball Signo UMN-307 is a single retractable gel ink pen featuring a 0.7mm medium nib and ergonomic rubber grip. Its uni Super Ink is waterproof, lightproof, quick-drying, and fraud-resistant, making it ideal for legal documents and long writing sessions. Manufactured by Mitsubishi, this pen combines precision, comfort, and security in a sleek blue design.

## Description

uni-ballsigno UMN-307 gel ink rollerball retractable pen BLUE liquid ink colour x 1 single pen

## Features

- Price is for 1 single retractable pen
- The uni-ball Signo 307 Rollerball is a gel pen that is retractable which prevents the nib from drying out and allows leak-free storage
- The ink it uses is uni Super Ink that makes it waterproof, fraud resistant and permanent perfect for legal documents or for scrapbooking
- It’s rubberised grip makes it comfortable to use for long periods, and it’s newly developed nib makes it perfect for long essays
- light proof / water proof / quick drying

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Mitsubishi |
| Brand | uni-ball |
| Item Weight | 0.352 ounces |
| Product Dimensions | 5.59 x 0.59 x 0.39 inches |
| Item model number | UMN-307 |
| Is Discontinued By Manufacturer | No |
| Color | Blue |
| Closure | Retractable |
| Grip Type | ergonomic |
| Pencil Lead Degree (Hardness) | F |
| Material Type | Rubber |
| Number of Items | 1 |
| Size | 1 Count (Pack of 1) |
| Point Type | Medium |
| Line Size | 0.7mm |
| Ink Color | Blue |
| Manufacturer Part Number | UMN-307 |

## Product Details

- **Brand:** uni-ball
- **Writing Instrument Form:** Roller Ball Pen
- **Color:** Blue
- **Ink Color:** Blue
- **Age Range (Description):** Adult

## Images

![signo UMN-307 gel ink rollerball retractable pen BLUE liquid ink colour x 1 single pen - Image 1](https://m.media-amazon.com/images/I/41YAx1KQ4ML.jpg)

## Available Options

This product comes in different **Number of Items** options.

## Frequently Bought Together

- uni-ball signo UMN-307 gel ink rollerball retractable pen BLUE liquid ink colour x 1 single pen
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**Shop now:** [https://www.desertcart.sc/products/384876442-signo-umn-307-gel-ink-rollerball-retractable-pen-blue-liquid](https://www.desertcart.sc/products/384876442-signo-umn-307-gel-ink-rollerball-retractable-pen-blue-liquid)

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-01-25*