Use Your Watch as a Compass
If you have the Apple Watch 5, you can use your watch as a Compass.
The new Compass app is a standalone app on your wrist that shows you the direction you are facing like a normal compass, the incline, elevation and your latitude and longitude.
You need to keep your watch away from metal on your clothing and some watch bands can affect the compass.
This is a cool feature, and especially useful when hiking and if you have the LTE version so you can leave your iPhone at home and still have a compass.