---
product_id: 300009327
title: "Outgeek 21PCS Invisible Ink Pen Creative Practical Battery Powered Spy Pen with UV Light"
brand: "outgeek"
price: "¥8935"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/300009327-outgeek-21pcs-invisible-ink-pen-creative-practical-battery-powered-spy
store_origin: JP
region: Japan
---

# Bill Checker UV Light Invisible Ink Outgeek 21PCS Invisible Ink Pen Creative Practical Battery Powered Spy Pen with UV Light

**Brand:** outgeek
**Price:** ¥8935
**Availability:** ✅ In Stock

## Summary

> 🕵️‍♂️ Write, Reveal, and Conquer the Secrets!

## Quick Answers

- **What is this?** Outgeek 21PCS Invisible Ink Pen Creative Practical Battery Powered Spy Pen with UV Light by outgeek
- **How much does it cost?** ¥8935 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/300009327-outgeek-21pcs-invisible-ink-pen-creative-practical-battery-powered-spy)

## Best For

- outgeek enthusiasts

## Why This Product

- Trusted outgeek brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durable Design:** Built to last with high-quality plastic.
- • **Dual Functionality:** Not just a pen—it's a bill verification tool!
- • **Compact Convenience:** Perfectly sized at 13cm for on-the-go stealth.
- • **Multi-Surface Magic:** Write on T-shirts, paper, skin, and more!
- • **Unleash Your Inner Spy:** Craft secret messages that only you can read!

## Overview

The Outgeek 21PCS Invisible Ink Pen is a creative and practical tool designed for the modern spy enthusiast. Measuring 13cm in length, this durable plastic pen allows you to write invisible messages that can be revealed using the built-in UV light. Its multifunctional capabilities extend to checking the authenticity of dollar bills, making it a versatile addition to your toolkit. Ideal for various surfaces, including T-shirts, paper, and skin, this pen is perfect for anyone looking to add a touch of mystery to their communication.

## Description

Description:Light Power Supply: 3 x Button batteries(included)/pieceLight Color: BlueProduct Color: MulticolorMaterial: PlasticSingle Size: Length 13cm(5.12in)Package Includes: 21 x Invisible ink penNote:- The 21 pens are in 7 colors, each color 3pcs.- Button battery of UV light is included.- Please refer to the measurement. Tiny measuring error is allowable in normal range.- There might be a little color difference due to the monitor, camera or other factors, please refer to the physical item.

## Features

- Single Size: Length 13cm(5.12in)
- How to use: The message written by the spy pen is invisible, so you can use the light on the cap to see the secret message
- Material: Made of plastic, high quality and durable
- Multifunctional: The invisible ink pen with UV light can also be used to check dollar bills
- Application: The message writer can be applied to T-shirts, paper, skin and other surfaces

## Images

![Outgeek 21PCS Invisible Ink Pen Creative Practical Battery Powered Spy Pen with UV Light - Image 1](https://m.media-amazon.com/images/I/61c0GQ1+AHL.jpg)
![Outgeek 21PCS Invisible Ink Pen Creative Practical Battery Powered Spy Pen with UV Light - Image 2](https://m.media-amazon.com/images/I/61T0hLZENzL.jpg)
![Outgeek 21PCS Invisible Ink Pen Creative Practical Battery Powered Spy Pen with UV Light - Image 3](https://m.media-amazon.com/images/I/61spN6HK90L.jpg)
![Outgeek 21PCS Invisible Ink Pen Creative Practical Battery Powered Spy Pen with UV Light - Image 4](https://m.media-amazon.com/images/I/51voc7XzR2L.jpg)
![Outgeek 21PCS Invisible Ink Pen Creative Practical Battery Powered Spy Pen with UV Light - Image 5](https://m.media-amazon.com/images/I/61kcfUiqOpL.jpg)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.jp/products/300009327-outgeek-21pcs-invisible-ink-pen-creative-practical-battery-powered-spy](https://www.desertcart.jp/products/300009327-outgeek-21pcs-invisible-ink-pen-creative-practical-battery-powered-spy)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-05-10*