How are fees charged on the Arbitrum network?

Arbitrum One (ETH) is Ethereum on the Arbitrum network, which is its native coin. When you perform transactions on the Arbitrum network, the fees are charged in Arbitrum One (ETH) rather than the specific token you are transferring.

To top up the balance in your Arbitrum One (ETH) wallet, you can purchase ETH in an exchange and then transfer the tokens to your wallet on the Arbitrum network.