Rotating projector - The projector can be rotated 180 for ceiling or wall projection. The projection brightness can be adjusted between high, medium, low or off according to your needs. Large LED display - The large LED display clearly displays the time and other setting icons. Screen brightness can be set to high, low and off to avoid disturbing sleep. 12/24 hour switchable; please note that this projection alarm clock must be connected to a power source. 7 alarm tones and Snooze function - You can choose from 7 different ringtones: Wave, Piano, Nightingale Song, Beep, Seagull Song and FM Radio. The "snooze" function is repeated every 10 minutes up to 3 times to avoid oversleeping. FM Radio - Save up to 15 preset FM radio stations with frequencies between 76 and 108 MHz. USB Port - Designed with a USB output port on the back of the alarm clock, it is convenient to charge your smartphone. Please note that this projection alarm clock must be connected to a power source in order to use. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.