Accelerometer and gyroscope axes for Apple Watch

Hi,

The documentation for accessing raw accelerometer events makes clear what the axes orientations are on an iPhone, but I cannot seem to find anything that explicitly states the orientations for Apple Watch.

Is this information documented?

Many thanks.

The axes for the iPhone and Apple Watch are similar.

If you place a phone and a watch side by side on a desk with

  • the screens face up
  • the phone power button and watch crown both on the right hand side

they both have the “same” axes.

On the watch:

  • +X is to horizontally to the side towards the crown
  • +Y is to horizontally towards the top edge of the watch
  • +Z upwards vertically from the watch face
Accelerometer and gyroscope axes for Apple Watch
 
 
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