---
product_id: 447115458
title: "OnlyKey Duo - The Best Protection for All of Your USB-C and USB-A Devices"
brand: "onlykey"
price: "¥21311"
currency: JPY
in_stock: true
category: "Only Key"
url: https://www.desertcart.jp/products/447115458-onlykey-duo-the-best-protection-for-all-of-your-usb
store_origin: JP
region: Japan
---

# Waterproof & tamper-resistant PIN-protected auto data wipe Multi-protocol 2FA security OnlyKey Duo - The Best Protection for All of Your USB-C and USB-A Devices

**Brand:** onlykey
**Price:** ¥21311
**Availability:** ✅ In Stock

## Summary

> 🔐 Unlock next-level security with OnlyKey Duo — your digital fortress on the go!

## Quick Answers

- **What is this?** OnlyKey Duo - The Best Protection for All of Your USB-C and USB-A Devices by onlykey
- **How much does it cost?** ¥21311 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/447115458-onlykey-duo-the-best-protection-for-all-of-your-usb)

## Best For

- onlykey enthusiasts

## Why This Product

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

## Key Features

- • **Rugged Portability:** Waterproof, tamper-proof design built to travel with you—security that never takes a day off.
- • **PIN-Guarded Privacy:** Unlock OnlyKey directly with a PIN; 10 failed attempts trigger automatic data wipe for ultimate peace of mind.
- • **Universal Compatibility:** Seamlessly works with every major platform from Google to GitHub with FIDO2, U2F, OTP & more.
- • **Effortless Login Experience:** Plug in, press a button, and breeze through secure logins on Windows, Mac, Linux, or Chromebook—no password fatigue.
- • **All-in-One Security Powerhouse:** Combines password manager, 2FA key & secure token for bulletproof online protection.

## Overview

OnlyKey Duo is a compact, waterproof, and tamper-resistant security key that integrates a password manager and multi-protocol two-factor authentication (FIDO2, U2F, OTP). Compatible with all major platforms and devices, it features PIN protection with automatic data wipe after 10 failed attempts, ensuring your credentials stay safe even if lost or stolen.

## Description

Buy

## Features

- ✅ PROTECT ONLINE ACCOUNTS – A password manager, two-factor security key, and secure communication token in one, OnlyKey can keep your accounts safe even if your computer or a website is compromised. OnlyKey is open source, verified, and trustworthy.
- ✅ UNIVERSALLY SUPPORTED – Works with all websites including Twitter, Facebook, GitHub, and Google. Onlykey supports multiple methods of two-factor authentication including FIDO2 / U2F, Yubico OTP, TOTP, Challenge-response.
- ✅ PORTABLE PROTECTION – Extremely durable, waterproof, and tamper resistant design allows you to take your OnlyKey with you everywhere.
- ✅ PIN PROTECTED – The PIN used to unlock OnlyKey is entered directly on it. This means that if this device is stolen, data remains secure, after 10 failed attempts to unlock all data is securely erased.
- ✅ EASY LOG IN –No need to remember multiple passwords because by plugging OnlyKey to your computer, it automatically inputs your username and password. It works with Windows, Mac OS, Linux, or Chromebook, just press a button to login securely!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09QKCH1VX |
| Best Sellers Rank | 113,336 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 1,217 in USB Flash Drives |
| Brand Name | OnlyKey |
| Colour | Black |
| Compatible Devices | Laptops |
| Compatible Phone Models | Laptop |
| Country of Origin | USA |
| Customer Reviews | 3.2 3.2 out of 5 stars (53) |
| Enclosure Material | Papier |
| Form Factor | Case |
| Item Dimensions | 25 x 7 x 15 millimetres |
| Item Weight | 0.01 Kilograms |
| Manufacturer Part Number | 3f6c1cda-0ade-4e67-b714-a532e0439385 |
| Model Number | 3f6c1cda-0ade-4e67-b714-a532e0439385 |
| Number of Packs | 1 |
| Pattern | Einfarbig |
| Product Features | Waterproof |
| Shell Type | Hard |
| Theme | Modern |
| UPC | 633832116238 |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** OnlyKey
- **Colour:** Black
- **Compatible devices:** Laptops
- **Form factor:** Case
- **Shell type:** Hard

## Images

![OnlyKey Duo - The Best Protection for All of Your USB-C and USB-A Devices - Image 1](https://m.media-amazon.com/images/I/71vEBR2cp9L.jpg)

## Frequently Bought Together

- OnlyKey Duo - The Best Protection for All of Your USB-C and USB-A Devices
- OnlyKey Silicone Case - Stealth Black
- Yubico - YubiKey 5 NFC - Two-Factor authentication (2FA) Security Key, Connect via USB-A or NFC, FIDO Certified - Protect Your Online Accounts

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**Shop now:** [https://www.desertcart.jp/products/447115458-onlykey-duo-the-best-protection-for-all-of-your-usb](https://www.desertcart.jp/products/447115458-onlykey-duo-the-best-protection-for-all-of-your-usb)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-11-14*