The UI-1038 is a portable multi-functional music starry sky projection calendar, which can display perpetual calendar(2000-2099), time, date, week, temperature and countdown. It also can project colorful starry sky with the rhythm of the music especially in dark and let you enjoy various graceful music. It is powered by 3 AAA batteries for durable to use. Therefore, it is really a wonderful gadget especially suitable for living room and bedroom. Features - Model: UI-1038. - Color: as shown in the pictures. - Shell Material: hard plastic. 1. Display of perpetual calendar(2000-2099), time (12-hour/24-hour format), date and week. 2. Thermometer: between Centigrade temperature and Fahrenheit temperature(0 C-50 C, 32 F-122 F). 3. Alarm clock of chords/natural sounds 4. Function of snooze 5. Function of countdown timer (timing from 00:00:00-23:59:59 hours). 6. Function of timed music appreciation: In any state, push the key TIME to set time for music appreciation, and initial time is 10 minutes. Push again to select 20/30/40/50/60 minutes. 7. Music appreciation mode (10 songs for choice) In any mode, push SOUND to access the demonstration mode and start playing chords/natural sounds and colored lamp displays starry sky with change of music rhythms, and timing starts as per preset time for music appreciation time. 8. Dynamic projection of colored starry sky accompanied with music rhythms. 9. Backlight function: Backlight will be off automatically after 8 seconds when pressing button. - Powered by 3 * 1.5V AAA batteries (not included).