Norme bip39 https://writeablog.net/ipennywpzc/the-ultimate-overview-to-offline-bip39-generators-remain-secure Even though it uses BIP32 technique you'll be able to still import BIP39 seeds into Electrum wallet. Also besides BIp32 there is BIP44 Model which some wallet use for the technology of seeds. BitBox02 - A successor to your BitBox series, this components wallet supports BIP39 seed https://blogfreely.net/travenmdoq/create-your-own-distinct-bip39-mnemonic-expression-with-python-scripts