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 - large LED display for clear display of the time and other configuration icons. The screen brightness can be set to three levels: high, low and off, to avoid disturbing sleep. Can switch 12/24h; Please note that this projection alarm clock must be connected to a power source. 7 alarm tones and Snooze function - you can select 7 different ringtones: waves, piano, nightingale song, beep, seagull song and FM radio. "Snooze" function every 10 minutes with up to 3 repetitions so you don't oversleep. FM Radio - Save up to 15 preset FM radio stations with a frequency between 76 and 108 MHz. USB Port - Design with USB output port on the back of the alarm clock for convenient charging your smartphone. Please note that this projection alarm clock must be connected to a power source in order to use.