In Sether you have a wallet automatically generated for you where you can transfer ETH to fund marketing campaigns. The wallet is an ERC20 wallet that can hold ETH and any number of custom ERC20 tokens.
You can import your Sether wallet into any other ERC20 compatible Ethereum wallet to take control of your funds. To do that, just click the Private Key button next to the wallet and the private key of the wallet will be downloaded to your computer. You will also receive an email at your registered Sether email address with the password for your private key.
Warning: Always remember to keep your private key and password secure. Anyone that has access to this information can access your wallet and retrieve funds.