For android only...
You can set digital clock as your turntable watch to check the present time as you lay in your bed at night.
For that purpose you need to install the following apps from playstore
Wow clock minimal flip
Custom screen rotation
Proximity sensor screen
App off timer

Custom screen rotation can be used to put wow clock as landscape (horizontal screen view)
Proximity sensor screen to put screen on functionality without pressing any button - only put your hand closed on camera.
App off timer to disable after period time the proximity sensor screen - otherwise it will be unpleasure after you go out of your home...