Time Projection: It is expected that the temperature of Projection Clock will automatically change from indoor temperature to outdoor temperature, and it will be projected on the wall in soft red, the projection distance on the ceiling or wall should be 5 to 13 ft (1.5 to 4 m).Dual Alarm with Snooze Function: Projection Alarm Clock is a dual alarm clock with snooze function, which allows you to get an additional five minutes of sleep time and has the function of snooze. Press any button except the top button to stop the alarm.Adjustable Backlight: Projection Digital Clock has a large digital display with 8color cyclic change, which is displayed on LCD and wireless internal and external thermometer. Just press the "" key to adjust the four brightness modes of the backlight, high medium low output.Backup and USB Charge: Battery backup and USB charging. Alarm Clock with Projection is 5V/1.2A. The AC power supply is used for permanent projection and time display. The battery ensures that all settings are memorized during power failure.Consummate Gift: It can predict the weather, pressure trend and temperature trend in the next 12 hours; the clock, wireless sensor and AC adapter are packaged in one box; 12/24 hours, date and week are displayed on the 3inch backlit LCD screen of Clock Ceiling Projection.