[All-round Compatibility] X-SEED offers up to 24 recovery words per sheet, for any software or hardware wallets that uses the standard 12, 18 and 24 recovery words. Suitable for wallets such as Metamask, Trust Wallet, Exodus, SecuX hardware wallets, Ledger, Trezor and many more.[Fire-proof and water-resistant] 6mm indestructible Stainless-steel sheets can resist fire and temperature as high as 2649 °F / 1454 °C; the laser engraved tiles with English letters would not get damaged or washed away by water.[Unhackable] Your crypto seed is backed up and stored physically offline, off the radar and out of reach from hackers and attackers on the internet.[Multiple Backup Sets] With the aluminum seed backup and the stainless steel seed storage, X-SEED PRO offers storage for up to 4 wallets/ backup sets of 12 recovery words or 2 wallets/ backup sets of 24 recovery words.