---
product_id: 516266981
title: "imKey S1 Crypto Seed Phrase Storage Metal Plate Backup for 12/18/24 Word Recovery Phrase Fireproof Steel Cold Bitcoin Key Mnemonic Phrase"
brand: "imkey"
price: "R$657"
currency: BRL
in_stock: true
reviews_count: 8
category: "Im Key"
url: https://www.desertcart.com.br/products/516266981-imkey-s1-crypto-seed-phrase-storage-metal-plate-backup-12
store_origin: BR
region: Brazil
---

# Waterproof & corrosion resistant Dual-sided secure seed storage 1398°C melting point steel imKey S1 Crypto Seed Phrase Storage Metal Plate Backup for 12/18/24 Word Recovery Phrase Fireproof Steel Cold Bitcoin Key Mnemonic Phrase

**Brand:** imkey
**Price:** R$657
**Availability:** ✅ In Stock

## Summary

> 🔒 Lock in your crypto legacy with imKey S1 — because your seed phrase deserves fortress-level protection!

## Quick Answers

- **What is this?** imKey S1 Crypto Seed Phrase Storage Metal Plate Backup for 12/18/24 Word Recovery Phrase Fireproof Steel Cold Bitcoin Key Mnemonic Phrase by imkey
- **How much does it cost?** R$657 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/516266981-imkey-s1-crypto-seed-phrase-storage-metal-plate-backup-12)

## Best For

- imkey enthusiasts

## Why This Product

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

## Key Features

- • **Mistake-Proof Backup Design:** Fixed compartments and physical dividers organize your seed phrase with precision, reducing human error during recovery.
- • **Unmatched Fireproof Security:** Crafted from 304 stainless steel with a melting point of 1398°C, it outlasts typical house fires to keep your crypto safe.
- • **Waterproof & Corrosion-Resistant:** Engineered to withstand water, humidity, and corrosion, ensuring your seed phrase stays pristine no matter the environment.
- • **Offline Cold Storage Compatibility:** 100% offline, BIP-39 compliant, and compatible with all major wallets like Ledger, Trezor, MetaMask, and Coinbase Wallet.
- • **Dual-Sided Storage for Multi-Wallet Pros:** Securely store two separate 12-word seed phrases on one device—perfect for managing multiple crypto assets effortlessly.

## Overview

The imKey S1 is a premium stainless steel seed phrase backup plate designed for 12/18/24-word recovery phrases. It offers fireproof protection up to 1398°C, waterproof and corrosion resistance, and a mistake-proof design with physical dividers for secure, error-free storage. Dual-sided engraving allows storage of two separate seed phrases, making it ideal for multi-wallet users. Fully offline and BIP-39 compatible, it supports all major crypto wallets, ensuring your mnemonic phrase remains safe from physical and digital threats.

## Description

Buy imKey S1 Crypto Seed Phrase Storage Metal Plate Backup for 12/18/24 Word Recovery Phrase Fireproof Steel Cold Bitcoin Key Mnemonic Phrase: Safe Accessories - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Sturdy, high quality - I suspect mine was a returned item because it wasn't sealed, nor was the device properly inserted in the box. Shame on desertcart for selling something like that! But all of the parts, including the three plates containing the letters, were intact so there was no point in returning it. Everything was easy to set up, albeit time consuming since you have to punch out each letter of the words in the seed phrase and carefully insert them into the slots. The plates are strong and robust. The supplied screwdriver easily removed the screws and each plate slid apart with no problems whatsoever. Once the letters were inserted and double-checked, the plate covers went back into place and the screws reinserted and installed easily. Just a note for complainers who don't read instructions (which they probably won't read this, either) and slammed the device for only having space for four letters per word when their seed phrase words contained more than four letters: all you need when entering the seed phrase is four letters. It clearly says that in the product description and if you look into the BIP-39 or BIP-44 standards, those verify that fact. The only negative thing I have to say is that the "i" tiles look very much like the "l" tiles and you have to look closely to tell them apart. I wish they had separated the dot in the "i" more.
Review: Strong - Spectacular! Very sturdy and quality product.

## Features

- Fireproof & Waterproof Stainless Steel Seed Storage: Made from 304 stainless steel with a 1398°C melting point, imKey S1 protects your seed phrase from fire, water, corrosion, humidity, and physical impact, exceeding typical house fire temperatures (~815°C).
- Mistake-Proof Seed Phrase Backup Design: imKey S1 features a fixed-compartment, mistake-proof system. Physical dividers and dedicated slots separate each mnemonic word by groups of four letters, keeping characters securely in place. The tiles fit perfectly into their slots to prevent loss or misplacement, while remaining easy to read — reducing the risk of human error during backup and recovery.
- Dual-Sided Backup for Multiple Wallets: The S1 offers dual-sided (A/B) storage. allowing you to securely stores two separate 12-word seed phrases, ideal for users managing multiple crypto wallets. All characters are laser-engraved for permanent legibility, and the enclosure is secured with a full set of screws and optional locking mechanism for added physical security.
- BIP-39 Compatible & Easy Recovery: According to the BIP39 standard, each mnemonic word can be uniquely identified by its first 4 letters, which is sufficient for full recovery. For example, if your seed phrase includes “desert shift awesome”, you only need to record “dese shif awes” in the metal backup to accurately restore the complete phrase.
- Offline Cold Storage for All Major Wallets: A 100% offline, non-electronic solution that eliminates hacking and network risks. Compatible with imToken, imKey Pro, Ledger, Trezor, MetaMask, Coinbase Wallet, and all BIP-39 wallets. Supports 12 / 18 / 24-word seed phrases.
- Complete Kit, easy to Use: 1 x HeirBOX S1, 3 x metal letters plates, 1 x screwdriver, 6 x screws, 1 x instruction
- Customer service: If you need assistance or encounter any issues, please contact us at support@imkey.im.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | imKey |
| Color | Silver |
| Lock Type | Key |
| Material | Stainless Steel |
| Product Dimensions | 4.13"D x 0.24"W x 2.36"H |
| Special Feature | Fireproof, Waterproof |

## Product Details

- **Brand:** imKey
- **Color:** S1
- **Included Components:** Screw
- **Item Weight:** 6.4 ounces
- **Lock Type:** Key
- **Material:** Stainless Steel
- **Mounting Type:** Wallet Mount
- **Product Dimensions:** 4.13"D x 0.24"W x 2.36"H
- **Special Feature:** Fireproof, Waterproof
- **Water Resistance Level:** Waterproof

## Images

![imKey S1 Crypto Seed Phrase Storage Metal Plate Backup for 12/18/24 Word Recovery Phrase Fireproof Steel Cold Bitcoin Key Mnemonic Phrase - Image 1](https://m.media-amazon.com/images/I/61SY5XV0ScL.jpg)

## Questions & Answers

**Q: What should I pay attention to when installing the seed phrase into the backup box?**
A: Please install your recovery phrase away from others and cameras. Do not take photos. After installed, Store in a secure place, with a lock, to prevent others from viewing it.

**Q: Why I record only the first 4 letters of each mnemonic word? Is this safe?**
A: Yes — it’s safe. The BIP39 standard uses a list of 2048 words where no two words share the same first four characters, so the first 4 letters unambiguously identify each word. Wallets can complete the full word from those four letters.

**Q: Can this seed box protect against fire and water?**
A: Yes. The imKey HeirBOX S1 is made from durable 304 stainless steel that is fireproof, waterproof, and corrosion-resistant, designed to withstand extreme heat and water exposure so your mnemonic phrase stays protected.

**Q: How many mnemonic phrases can one HeirBOX S1 back up?**
A: The imKey S1 features a double-sided design and can store two sets of recovery phrases (Side A and Side B can each hold one 12-word recovery phrase). Each slot can store 4 letter tiles, which is sufficient to cover all BIP39 standard word lengths.

**Q: How should I install recovery phrase words that contain only three letters?**
A: Use a blank tile (included) for the fourth position. Three-letter words are already unique in the BIP39 list, so the blank simply completes the slot.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Sturdy, high quality
*by M***Y on September 1, 2025*

I suspect mine was a returned item because it wasn't sealed, nor was the device properly inserted in the box. Shame on Amazon for selling something like that! But all of the parts, including the three plates containing the letters, were intact so there was no point in returning it. Everything was easy to set up, albeit time consuming since you have to punch out each letter of the words in the seed phrase and carefully insert them into the slots. The plates are strong and robust. The supplied screwdriver easily removed the screws and each plate slid apart with no problems whatsoever. Once the letters were inserted and double-checked, the plate covers went back into place and the screws reinserted and installed easily. Just a note for complainers who don't read instructions (which they probably won't read this, either) and slammed the device for only having space for four letters per word when their seed phrase words contained more than four letters: all you need when entering the seed phrase is four letters. It clearly says that in the product description and if you look into the BIP-39 or BIP-44 standards, those verify that fact. The only negative thing I have to say is that the "i" tiles look very much like the "l" tiles and you have to look closely to tell them apart. I wish they had separated the dot in the "i" more.

### ⭐⭐⭐⭐⭐ Strong
*by M***A on December 16, 2025*

Spectacular! Very sturdy and quality product.

### ⭐⭐⭐⭐⭐ Solid and good quality
*by F***E on April 9, 2025*

It’s solid good quality and secured. It is little time consuming to put everything together but it’s worth the time. I love the quality of it and if I need one more I will buy the same one

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-03-12*