SOL
SOL is the native currency in Solana's ecosystem. In Walken, it is stored in the SOL wallet (the purple wallet on the Wallet screen) and used to pay transaction fees (gas) as well as buy and sell NFTs on the Marketplace.
❗Currently, to get SOL to your wallet in Walken, you may send them from your another wallet where you have SOL. Buying SOL directly from the app or exchanging WLKN to SOL (or vice versa) is not available.