---
product_id: 559884140
title: "HeirBOX S1 Crypto Seed Phrase Storage Metal Plate Backup Stainless Steel Fireproof Waterproof for 12/18/24 Word BIP39 Mnemonic Recovery Phrase Compatible with Ledger Trezor Bitcoin Cold Wallet"
brand: "imkey"
price: "64868CFA"
currency: XOF
in_stock: true
url: https://www.desertcart.sn/products/559884140-heirbox-s1-crypto-seed-phrase-storage-metal-plate-backup-stainless
store_origin: SN
region: Senegal
---

# Waterproof & corrosion-resistant 6-screw tamper-proof locking Fireproof up to 2000°C HeirBOX S1 Crypto Seed Phrase Storage Metal Plate Backup Stainless Steel Fireproof Waterproof for 12/18/24 Word BIP39 Mnemonic Recovery Phrase Compatible with Ledger Trezor Bitcoin Cold Wallet

**Brand:** imkey
**Price:** 64868CFA
**Availability:** ✅ In Stock

## Summary

> 🔐 Lock your crypto legacy in fireproof steel—because your keys deserve eternal security.

## Quick Answers

- **What is this?** HeirBOX S1 Crypto Seed Phrase Storage Metal Plate Backup Stainless Steel Fireproof Waterproof for 12/18/24 Word BIP39 Mnemonic Recovery Phrase Compatible with Ledger Trezor Bitcoin Cold Wallet by imkey
- **How much does it cost?** 64868CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/559884140-heirbox-s1-crypto-seed-phrase-storage-metal-plate-backup-stainless)

## 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

- • **All-in-One Secure Kit:** Includes screwdriver, screws, and metal plates for effortless setup and rock-solid seed phrase protection.
- • **Offline Hacker-Proof Design:** Zero electronics, zero hacks—your cold storage backup is physically impenetrable.
- • **Unbreakable Fireproof Armor:** Protect your seed phrase from infernos up to 3632°F—because your crypto deserves fortress-level security.
- • **BIP39 Compatible & Streamlined:** Store 12/18/24-word seed phrases using just the first 4 letters—fast, discreet, and universally compatible.
- • **Precision Laser-Engraved Durability:** Smudge-proof, rust-resistant steel plates ensure your recovery phrase stays crystal clear for decades.

## Overview

The imKey HeirBOX S1 is a premium stainless steel crypto seed phrase storage device designed for ultimate durability and security. Fireproof up to 2000°C, waterproof, and corrosion-resistant, it supports 12, 18, and 24-word BIP39 seed phrases with laser-engraved characters. Featuring a 6-screw tamper-proof locking system and a fully offline design, it offers hacker-proof cold storage compatible with major wallets like Ledger and Trezor. The kit includes all necessary tools for quick, secure setup, making it the ideal choice for long-term crypto asset protection.

## Description

imKey S1 Fireproof Crypto Seed Phrase Storage, Crypto Steel Capsule Metal Wallet, Cold Storage Backup, 12/18/24 Words Bitcoin Key Phrase Storage, Steel Plate, Compatible with Ledger, Trezor, KeepKey

## Features

- [BIP39 Wallet Supported: 12/18/24 Seed Phrases] Compliant with the BIP39 mnemonic word list, where the first four letters of each of the 2048 words are unique. You only need to record the first four letters of each word to accurately restore the full mnemonic phrase, simplifying the backup process
- [User-Driven Design: Thicker and Tighter] Don’t worry about the seed phrase being moved or out-of-order after tightening the tile. We made the plate thicker than others, and provide sufficient screws to tighten your recovery phrases
- [Laser-Engraved Characters] The characters are laser-engraved on the stainless steel tile, which is smudge-free, fireproof (It resists temperature up to 3632°F/ 2000°C), waterproof and anti-corrosion. Keep the seed phrase safe forever and ever
- [100% Hacker-Proof Physical Security] Non-electronic design ensures no risk of hacking, providing an ultra-secure, physical backup solution for your cold wallet
- [Equipped with laser-engraved letter blocks] that provide clear and durable markings, preventing blurring or wear over time or due to environmental factors, ensuring long-term readability
- If an extreme situation occurs where alphabet blocks are insufficient, please contact our customer support at support@imkey.im for assistance.
- [What’s in the box] 1 x HeirBOX S1, 3 x metal letters plates, 1 x screwdriver, 3 x screws, 1 x instruction

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | IMKEY Co., Ltd |
| Part Number | HeirBOX S1 |
| Product Dimensions | 10.49 x 0.61 x 5.99 cm; 181.44 g |
| Item model number | Crypto Seed Storage |
| Colour | S1 |
| Style | HeirBOX S1 (Seed Phrase Storage Box) |
| Material | Stainless Steel |
| Plug profile | Wallet Mount |
| Special Features | Fireproof, Waterproof |
| Included Components | Screws |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 181 g |

## Product Details

- **Brand:** imKey
- **Product dimensions:** 105D x 6W x 60H millimetres
- **Lock type:** Key
- **Colour:** S1
- **Material:** Stainless Steel
- **Special feature:** Fireproof, Waterproof
- **Mounting type:** Wallet Mount
- **Included components:** Screws
- **Item weight:** 0.4 Pounds
- **Water resistance level:** Waterproof

## Images

![HeirBOX S1 Crypto Seed Phrase Storage Metal Plate Backup Stainless Steel Fireproof Waterproof for 12/18/24 Word BIP39 Mnemonic Recovery Phrase Compatible with Ledger Trezor Bitcoin Cold Wallet - Image 1](https://m.media-amazon.com/images/I/51nVC93e8lL.jpg)

## Available Options

This product comes in different **Style Name** options.

## 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. Do not read aloud. 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: Why not just write my seed phrase on paper?**
A: Paper can burn, tear, or be damaged by water. A metal backup provides stronger long-term protection.

**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.

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-07-07*