--- 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" brand: "imkey" price: "฿3447" currency: THB in_stock: true reviews_count: 13 category: "Im Key" url: https://www.desertcart.co.th/products/516266981-imkey-heirbox-s1-crypto-seed-phrase-storage-metal-plate-backup store_origin: TH region: Thailand --- # Waterproof & corrosion-proof Dual-sided secure seed storage 1398°C melting point 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 **Brand:** imkey **Price:** ฿3447 **Availability:** ✅ In Stock ## Summary > 🛡️ Fortify your crypto legacy with fireproof, foolproof seed phrase security! ## 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 by imkey - **How much does it cost?** ฿3447 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/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 - • **Dual Wallet Ready:** Store two separate 12-word seed phrases on dual sides—perfect for managing multiple crypto assets securely. - • **Offline Cold Storage:** 100% offline, hacker-proof backup compatible with all major BIP-39 wallets like Ledger, Trezor, MetaMask. - • **Laser-Engraved Permanence:** All characters are etched for lifetime legibility, ensuring your recovery phrase never fades or smudges. - • **Unbreakable Fireproof Armor:** 304 stainless steel withstands up to 1398°C, protecting your crypto keys from any disaster. - • **Mistake-Proof Mnemonic Slots:** Dedicated compartments for 4-letter word segments eliminate human error during backup and recovery. ## Overview The imKey S1 is a premium stainless steel seed phrase backup plate engineered for ultimate durability and security. Fireproof up to 1398°C and waterproof, it safeguards your 12/18/24-word crypto recovery phrases against fire, water, corrosion, and physical damage. Featuring a mistake-proof design with fixed compartments for 4-letter mnemonic segments, dual-sided storage for multiple wallets, and laser-engraved characters for permanent clarity, it offers a hacker-proof offline cold storage solution compatible with all major BIP-39 wallets. The complete kit includes metal letter plates, screwdriver, screws, and instructions 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 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 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 | #436,091 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #436 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 (109) | | 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 - Image 1](https://m.media-amazon.com/images/I/5120f12dzVL.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. ## 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 --- ## 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.co.th/products/516266981-imkey-heirbox-s1-crypto-seed-phrase-storage-metal-plate-backup](https://www.desertcart.co.th/products/516266981-imkey-heirbox-s1-crypto-seed-phrase-storage-metal-plate-backup) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-04-24*