Bip39 Trezor. The account prolonged keys can be used for importing to most BIP44 suitable wallets, including mycelium or electrum. Inside the movie beneath you can observe the seed stamping system where I punch all the 24 words on to 4mm thick stainless-steel Coldbit Metal plate using a 1.5kg hammer https://bookmarkstime.com/story19009114/bip39-words-pdf-an-unbiased-view-of-bip39-word-list