Samsung Galaxy Watches come with a feature called Theater Mode (available on the Galaxy Watch 4/5 series).
When Theater mode is activated, all alerts, alarms, system sounds, Watch always on, and Wake-up gestures are turned off. This mode is ideal for when you're in a public setting, such as a movie theater, and need to silence your watch.
There are 2 ways to enable Theater Mode on your Galaxy Watch.
First, you can navigate to Settings app, then tap Advanced or Advanced features, and then tap Theater mode. Tap the switch to turn it on and then choose a duration.
Second, you can swipe down from the top of the screen to open the Quick settings panel, then tap the Theater mode icon, and then choose your desired duration. When you are done watching the movie, make sure you turn the mode off.
NOTE: If you can’t find the Theater mode icon, you may have to tap the “+” button, enter “Edit mode,” and add it to your Quick settings panel.
