The Cryptosteel MNEMONIC is for backing up your seed phrase. Wallets such as TREZOR and Ledger Nano S come with a 24 word BIP39 backup seed that can be used to restore your wallet. The issue is that if you lose that seed phrase and your hardware wallet then you also lose your cryptocurrency. The Cryptosteel MNEMONIC is a fire-proof, shock-proof, wear-proof, water-proof way of backing up that phrase.
Cryptosteel comes with more than 280 stainless steel letter blocks engraved on each side. Users are able to store up to 96 characters worth of confidential information in the cold wallet in minutes, guaranteeing the data’s safety without the need for specialized tools. Please keep in mind you only need to store first four characters of each recovery seed word! Thanks to BIP39 standard there is no words which would have the same first 4 letters.
Container for up to 96 characters + more than 280 stainless steel letter blocks.
Master Mnemonic Seed based on BIP39 specification.
Private, off-line storage for private keys and passwords.
Lightweight, stainless steel.
Indestructible, acid resistant, and uncrushable.
Fireproof up to 1200 C, or 2100 F.
Open-Hardware: blueprints available under CC License.
No tools necessary.
Made in EU.
See more here: https://www.youtube.com/watch?v=HpkOJcm484o