---
title: duration
framework: carplay
role: symbol
role_heading: Instance Property
path: carplay/cpnavigationalert/duration
---

# duration

The amount of time, in seconds, that the alert is visible.

## Declaration

```swift
var duration: TimeInterval { get }
```

## Discussion

Discussion Set duration to zero to display the alert until dismissed by the user. When duration is not zero, CPNavigationAlertMinimumDuration determines the minimum amount of time the alert is visible.

## See Also

### Getting the Alert Duration

- [CPNavigationAlertMinimumDuration](carplay/cpnavigationalertminimumduration.md)