---
title: duration
framework: metrickit
role: symbol
role_heading: Instance Property
path: metrickit/metricmanager/reportedstate/duration
---

# duration

The duration when the state was active during performance data collection.

## Declaration

```swift
let duration: Measurement<UnitDuration>
```

## See Also

### State details

- [domain](metrickit/metricmanager/reportedstate/domain.md)
- [label](metrickit/metricmanager/reportedstate/label.md)