Press and hold the side button until the power menu appears
Drag the Power Off slider
Wait for the watch to turn off
If the screen is frozen, press and hold both the side button and Digital Crown until the Apple logo appears, then try again
Press and hold the side button until the power menu appears
Drag the Power Off slider
Wait for the watch to turn off
If the screen is frozen, press and hold both the side button and Digital Crown until the Apple logo appears, then try again