Your Apple Watch should power off. Step 4: Wait at least 10 seconds to ensure your watch has fully shut down, and then press and hold the side button again until the Apple logo appears.
If your iPhone isn't responding and you're not able to power it off and then on again, you can force restart it to hopefully ...
A glass Apple logo sits at the top of every Mac Studio. There are ports on the front and the back of the Mac Studio. Perforated holes sit above the ports in the back to act as heat exhaust.