The black hands show the current time.
Click the clock face to show red hands.
Click and drag the red hands to move them to set the target time of your return.
Click outside the clock face to disable the countdown.
Use the settings button to adjust the return time, change layout, toggle hand visibility, flashing, alarm sound, and theme mode.
I have had to close for a few minutes. I will be back when the black hands reach the red hands.
Firebase is not configured yet.
To sync two displays:
Both displays will now mirror the same settings.