BITCOIN COLD WALLET: Seedor Safe allows permanent and secure storage of the recovery seed of bitcoin and other cryptocurrencies in resistant stainless steel. Please note: the seedor safe starter set is required for embossing. Compatible: the steel back-up is compatible with all hardware wallets (e.g. Ledger Nano, Trezor and bit box). Up to 8 characters and 2 digits can be stamped on each disk. This allows BIP39 Seed Phrase words to be punched in full length (12 or 24 words). Extremely resistant: embossed in solid stainless steel, the Krypto Seed Phrase is permanently protected from fire (up to 1,400 °C), water and corrosion. As the discs are numbered, even in the case of careless opening of the seed, is not lost. HACKERPROOF: the steel wallet is 100% offline and a discreet cold storage solution for BTC and crypto with guaranteed protection against hacker attacks. Tamper-proof stickers with serial number make the Crypto Wallet Back-Up tamper-proof. Box contents: 1 x Seedor Safe made of solid stainless steel, 28 x discs for holding your seed, 5 x tamper-proof stickers. Please note: the Seedor Safe Starter Set is required for use.