---
title: HKDataTypeIdentifierHeartbeatSeries
framework: healthkit
role: symbol
role_heading: Global Variable
path: healthkit/hkdatatypeidentifierheartbeatseries
---

# HKDataTypeIdentifierHeartbeatSeries

A series sample containing heartbeat data.

## Declaration

```swift
let HKDataTypeIdentifierHeartbeatSeries: String
```

## See Also

### Related Documentation

- [HKHeartbeatSeriesSample](healthkit/hkheartbeatseriessample.md)
- [HKHeartbeatSeriesQuery](healthkit/hkheartbeatseriesquery.md)
- [HKHeartbeatSeriesBuilder](healthkit/hkheartbeatseriesbuilder.md)

### Vital signs

- [heartRate](healthkit/hkquantitytypeidentifier/heartrate.md)
- [lowHeartRateEvent](healthkit/hkcategorytypeidentifier/lowheartrateevent.md)
- [highHeartRateEvent](healthkit/hkcategorytypeidentifier/highheartrateevent.md)
- [irregularHeartRhythmEvent](healthkit/hkcategorytypeidentifier/irregularheartrhythmevent.md)
- [restingHeartRate](healthkit/hkquantitytypeidentifier/restingheartrate.md)
- [heartRateVariabilitySDNN](healthkit/hkquantitytypeidentifier/heartratevariabilitysdnn.md)
- [heartRateRecoveryOneMinute](healthkit/hkquantitytypeidentifier/heartraterecoveryoneminute.md)
- [atrialFibrillationBurden](healthkit/hkquantitytypeidentifier/atrialfibrillationburden.md)
- [walkingHeartRateAverage](healthkit/hkquantitytypeidentifier/walkingheartrateaverage.md)
- [HKElectrocardiogramType](healthkit/hkelectrocardiogramtype.md)
- [oxygenSaturation](healthkit/hkquantitytypeidentifier/oxygensaturation.md)
- [bodyTemperature](healthkit/hkquantitytypeidentifier/bodytemperature.md)
- [bloodPressure](healthkit/hkcorrelationtypeidentifier/bloodpressure.md)
- [bloodPressureSystolic](healthkit/hkquantitytypeidentifier/bloodpressuresystolic.md)
- [bloodPressureDiastolic](healthkit/hkquantitytypeidentifier/bloodpressurediastolic.md)