See what time it is on the ceiling or wall without having to get out of bed. Projects time only with adjustable in 90 degree rotation to set projection the way you want it. 12 or 24hr manual set time and displays the room temperature (F/C) and humidity (%RH. ) Adjust your view from a calendar date or full weekday display. Also can adjust brightness settings for the backlight. Use included AC adapter to operate, but optional backup requires (not included) 2 AAA batteries.