---
product_id: 516266981
title: "imKey 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 | Stainless Steel, Fireproof Waterproof, 12/18/24 Word BIP39 Mnemonic, Compatible with Ledger Trezor Bitcoin"
brand: "imkey"
price: "S$68"
currency: SGD
in_stock: true
category: "Im Key"
url: https://www.desertcart.sg/products/516266981-imkey-heirbox-s1-crypto-seed-phrase-storage-metal-plate-backup
store_origin: SG
region: Singapore
---

# Waterproof & corrosion-resistant Dual-sided secure seed storage 1398°C fireproof steel imKey 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 | Stainless Steel, Fireproof Waterproof, 12/18/24 Word BIP39 Mnemonic, Compatible with Ledger Trezor Bitcoin

**Brand:** imkey
**Price:** S$68
**Availability:** ✅ In Stock

## Summary

> 🔒 Secure your crypto legacy with fireproof, waterproof confidence!

## Quick Answers

- **What is this?** imKey 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 | Stainless Steel, Fireproof Waterproof, 12/18/24 Word BIP39 Mnemonic, Compatible with Ledger Trezor Bitcoin by imkey
- **How much does it cost?** S$68 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/516266981-imkey-heirbox-s1-crypto-seed-phrase-storage-metal-plate-backup)

## 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

- • **Unmatched Fireproof Security:** Crafted from premium 304 stainless steel with a melting point of 1398°C—your seed phrase survives even the fiercest fires.
- • **Universal BIP39 Compatibility:** Supports 12/18/24-word phrases and works seamlessly with Ledger, Trezor, MetaMask, Coinbase Wallet, and all BIP39 wallets.
- • **Foolproof Mistake-Proof Design:** Physical dividers and locking tiles prevent errors and loss, making recovery effortless and error-free.
- • **Waterproof & Corrosion-Resistant:** Fully sealed to protect your crypto backup from water damage and rust, ensuring longevity and peace of mind.
- • **Dual-Sided Storage for Double Protection:** Store two separate 12-word seed phrases on opposite sides, perfect for managing multiple wallets or shared access.

## Overview

The imKey HeirBOX S1 is a premium stainless steel seed phrase storage plate designed to protect your crypto recovery phrases from fire, water, corrosion, and impact. Featuring a foolproof design with physical dividers and locking tiles, it supports dual-sided storage for two separate 12-word seed phrases. Compatible with all BIP39 wallets including Ledger and Trezor, it offers offline cold storage security with laser-engraved, permanent readability. The complete kit includes metal letter plates, screws, and a screwdriver for easy setup.

## Description

Buy imKey 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: Safe Accessories - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## Features

- Fireproof & Waterproof 304 Stainless Steel: Made of premium 304 stainless steel with 1398°C melting point — far above house fire temperature (~815°C). Fully protects your seed phrase from fire, water, corrosion, and impact.
- Foolproof Mistake-Proof Design: Fixed compartments with physical dividers separate every 4 letters. Tiles lock securely in place to prevent loss or errors, making backup and recovery simple and safe.
- Dual-Sided Storage for 2 Wallets: Store two separate 12-word seed phrases on Side A and B. Laser-engraved characters ensure permanent readability, secured with screws for extra protection.
- BIP39 Compatible & Easy Recovery: Supports 12/18/24-word phrases. Only the first 4 letters per word are needed for full recovery, saving space while ensuring 100% accuracy.
- Offline Cold Storage for all BIP 39 wallets: 100% offline and unhackable. Compatible with Ledger, Trezor, imKey Pro, imToken, MetaMask, Coinbase Wallet, and all BIP39-compliant wallets. The ultimate fireproof & waterproof cold storage backup for your Bitcoin, Ethereum, and other cryptocurrencies.
- 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 |
|---------------|-------|
| ASIN | B0BTM24566 |
| Additional Features | Fireproof, Waterproof |
| Best Sellers Rank | #148,563 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #214 in Safe Accessories |
| Brand Name | imKey |
| Chamber Depth | 0.24 Inches |
| Color | Silver |
| Control Type | Key Control |
| Customer Reviews | 4.6 4.6 out of 5 stars (113) |
| Included Components | 1 x HeirBOX S1, 3 x metal letters plates, 1 x screwdriver, 6 x screws, 1 x instruction |
| Item Dimensions D x W x H | 4.13"D x 0.24"W x 2.36"H |
| Item Weight | 0.4 Pounds |
| Lock Type | Key |
| Manufacturer | IMKEY Co., Ltd |
| Manufacturer Part Number | HeirBOX S1 |
| Material Type | Stainless Steel |
| Model Number | HeirBOX S1 |
| Mounting Type | Screw-mounted |
| Unit Count | 5.92 Ounce |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** imKey
- **Color:** Silver
- **Included Components:** 1 x HeirBOX S1, 3 x metal letters plates, 1 x screwdriver, 6 x screws, 1 x instruction
- **Item Weight:** 0.4 Pounds
- **Lock Type:** Key
- **Material:** Stainless Steel
- **Mounting Type:** Screw-mounted
- **Product Dimensions:** 4.13"D x 0.24"W x 2.36"H
- **Special Feature:** Fireproof, Waterproof
- **Water Resistance Level:** Waterproof

## Images

![imKey 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 | Stainless Steel, Fireproof Waterproof, 12/18/24 Word BIP39 Mnemonic, Compatible with Ledger Trezor Bitcoin - Image 1](https://m.media-amazon.com/images/I/61aa4YCm0dL.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. 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 Singapore*
*Store origin: SG*
*Last updated: 2026-07-30*