How can I add Arbitrum network to my wallet?

Either you can manually add it using the following details:

• Network name: Arbitrum One
• New RPC URL: https://arb1.arbitrum.io/rpc
• Chain ID: 42161
• Currency symbol: ETH
• Block Explorer URL: https://arbiscan.io/

Or just simply:

1. Go to ChainList and connect your MetaMask Wallet.
2. Look for 'Arbitrum One' in the search bar at the top of the page.
3. Tap 'Add to MetaMask' and the verified RPC information will be automatically added to your extension.