Indeed. And the red most use (a) doesn't blow your night vision, (b) isn't visible through your eyelids. (I recommend one where, if it also displays the time itself, shows the time in red too, at least when the room's dark.)
Once you've had this on the ceiling for a while, it's annoying to have to look for time on a nightstand or your wrist.
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Looks cool, but if the "writing on the wall" is only supposed to be the current time, there are enough (much more mundane-looking of course) alternatives, e.g. https://www.walmart.com/ip/Emlimny-Digital-LED-Projection-Al...
Indeed. And the red most use (a) doesn't blow your night vision, (b) isn't visible through your eyelids. (I recommend one where, if it also displays the time itself, shows the time in red too, at least when the room's dark.)
Once you've had this on the ceiling for a while, it's annoying to have to look for time on a nightstand or your wrist.