Usage Tips:Large LED display: Large LED display clearly shows real-time time, temperature and date, which is easy and convenient to read.The best projection distance is 3 meters.Alarm clock with snooze mode: You can set a daily alarm clock to wake you up every morning.When the alarm goes off, you can start snooze mode by pressing any button to get less than 60 minutes of sleep.The default snooze time is 5 minutes.It's a great gift for snoozers.Projection function: When the time is projected on the wall or ceiling, you can see the time just by looking up.The projection swivel arm can be rotated 180 degrees to allow projection from multiple angles.Three alarm clock modes: The alarm clock has 3 modes including everyday mode, weekday mode and Saturday off mode.AL on the LED screen means you have one of these modes turned on.Automatic dimming function: The LED alarm clock automatically dims between 6:00 p.m. and 6:00 a.m.