Bip39 how many combinations https://www.bitsdujour.com/profiles/wWbptt Although it uses BIP32 method you'll be able to continue to import BIP39 seeds into Electrum wallet. Also apart from BIp32 there is BIP44 Model which some wallet use with the technology of seeds. BitBox02 - A successor to the BitBox collection, this hardware wallet https://socialstrategie.com/story6137264/bip39-split-mnemonic-bip39-compatible-wallet-can-be-fun-for-anyone-https-linktr-ee-bip39