# Mouse5

> Additional (or sixth) mouse button.

## Definition

* **Type:** Field
* **Namespace:** [UnityEngine](/engine/6000.7/script-reference/unityengine.md)
* **Assembly:** UnityEngine.CoreModule

```csharp
Mouse5 = 328
```

### Remarks

Use this for detecting mouse button presses. The “5” mouse button is the sixth button on the user’s mouse if this additional button exists. Unity defines this as the "5" Mouse button, as the mouse Button numbering begins at 0.