---
title: CMAbsoluteAltitudeData
framework: coremotion
role: symbol
role_heading: Class
path: coremotion/cmabsolutealtitudedata
---

# CMAbsoluteAltitudeData

Data that records a change in absolute altitude.

## Declaration

```swift
class CMAbsoluteAltitudeData
```

## Overview

Overview Absolute altitude is only available on iPhone 12 and later and Apple Watch 6 or SE and later.

## Topics

### Accessing Altitude Data

- [altitude](coremotion/cmabsolutealtitudedata/altitude.md)
- [accuracy](coremotion/cmabsolutealtitudedata/accuracy.md)
- [precision](coremotion/cmabsolutealtitudedata/precision.md)

## Relationships

### Inherits From

- [CMLogItem](coremotion/cmlogitem.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSCoding](foundation/nscoding.md)
- [NSCopying](foundation/nscopying.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)
- [NSSecureCoding](foundation/nssecurecoding.md)

## See Also

### Altitude data

- [CMAltimeter](coremotion/cmaltimeter.md)
- [CMAltitudeData](coremotion/cmaltitudedata.md)