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# offWristDate

The date and time that the user takes their Apple Watch off their wrist.

```
var offWristDate: Date? { get }
```

## Discussion

Use this property to compute the duration that the user wears their Apple Watch.

The initial value of the [`offWristDate`](/documentation/SensorKit/SRWristDetection/offWristDate) property is the current date and the [`onWristDate`](/documentation/SensorKit/SRWristDetection/onWristDate) property is <doc://com.apple.documentation/documentation/ObjectiveC/nil-227m0>. The system changes the value of these properties as follows:

- When the user puts on their Apple Watch, the [`onWristDate`](/documentation/SensorKit/SRWristDetection/onWristDate) property becomes the current date and the [`offWristDate`](/documentation/SensorKit/SRWristDetection/offWristDate) property remains the same.
- When the user takes off their Apple Watch, the [`offWristDate`](/documentation/SensorKit/SRWristDetection/offWristDate) property becomes the current date, and the [`onWristDate`](/documentation/SensorKit/SRWristDetection/onWristDate) property remains the same.

---

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