Brand new and high quality. Display of perpetual calendar (2000-2099), time, date and week. Thermometer: shift between Centigrade temperature and Fahrenheit temperature. (0°C-50°C, 32°F-122°F) Shift between 12-hour and 24-hour modes. Alarm of chords/natural sounds. Function of snooze. Function of countdown(timing from 00:00:00-23:59:59 hours). Function of timed music appreciation. Music appreciation mode. Dynamic projection of colored starry sky accompanied with music rhythms. Backlight function. Power by 3*AAA batteries.(included)