All balances held in the Sling Wallet and all transactions between Sling Money users and with Sling Link are conducted using USDP, a digital currency pegged to the US Dollar.
You can display your Sling Wallet balance and peer-to-peer transactions in various global currencies. You can find the latest list of supported display currencies in the Sling Money app.
When you on-ramp or off-ramp funds with Sling Money, you can do so using whatever your local, native currency is.