# Market Order Trading
**Quickly buy or sell at the best available price.**
## 1. Passkey Users Logging in via Third-Party Authorization:
**(1) Placing a Market Buy Order:**
After confirming the quantity, click Buy to initiate PassKey verification. Once verified, the trade will be executed.
**(2) Placing a Market Sell Order:**
After confirming the quantity, click Sell to initiate PassKey verification. Once verified, the trade will be executed.
## 2. Users Logging in with exSat EVM Wallet:
**(1) Placing a Market Buy Order:**
After confirming the quantity, click \[Buy]. Once the wallet signature is completed, an on-chain transaction will be initiated.
**Note:** For first-time transactions involving non-gas tokens, an Approve operation is required.
**(2) Placing a Market Sell Order:**
After confirming the quantity, click \[Sell]. Once the wallet signature is completed, an on-chain transaction will be initiated.
**Note:** For first-time transactions involving non-gas tokens, an Approve operation is required.
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