> For the complete documentation index, see [llms.txt](https://docs.dragonswap.app/dragonswap/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.dragonswap.app/dragonswap/resources/developer-resources/smart-contracts/dragonswapv2/periphery/interfaces/external/iwsei.md).

# IWSEI

### Functions[​](https://docs.uniswap.org/contracts/v3/reference/periphery/interfaces/external/IWETH9#functions) <a href="#functions" id="functions"></a>

#### deposit[​](https://docs.uniswap.org/contracts/v3/reference/periphery/interfaces/external/IWETH9#deposit) <a href="#deposit" id="deposit"></a>

```solidity
  function deposit(
  ) external
```

Deposit sei to get wrapped sei

#### withdraw[​](https://docs.uniswap.org/contracts/v3/reference/periphery/interfaces/external/IWETH9#withdraw) <a href="#withdraw" id="withdraw"></a>

```solidity
  function withdraw(
  ) external
```

Withdraw wrapped sei to get sei