Saturn Wallet can easily import wallets you already have on Ethereum or Ethereum Classic with their private key or JSON file. However, remember that the only wallet backed up by your seed words is the initial account. Imported accounts are not backed up, so do keep your private key or JSON file in a secure place just in case.
Click the spinning man symbol at the top right of the wallet.
Select “Import Account” where you can then choose to import your account via private key or JSON file.
Then you can either import your wallet with a private key or a JSON file.