I noticed this icon in Control Center on my Apple Watch recently and didn’t recognize it. <s>It’s not listed on Apple’s support pages about Control Center ([a][2] [b][3])</s>. **UPDATE:** [This page](https://support.apple.com/guide/watch/control-center-apd06bc15da1/watchos) now includes this icon.

![Screenshot of Control Center on Apple Watch][1]

(bottom left)


  [1]: https://i.sstatic.net/iC8iT.png
  [2]: https://support.apple.com/en-us/HT206951
  [3]: https://support.apple.com/guide/watch/control-center-apd06bc15da1/watchos