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# quaternion

Returns a quaternion representing the device’s attitude.

```
var quaternion: CMQuaternion { get }
```

## Discussion

See the discussion of the [`CMQuaternion`](/documentation/CoreMotion/CMQuaternion) type in “Constants” for further information.

## See Also

[`rotationMatrix`](/documentation/CoreMotion/CMAttitude/rotationMatrix)

Returns a rotation matrix representing the device’s attitude.


---

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