The four directions rotate to display different functions. The functions of clockwise rotation are: perpetual calendar, alarm clock, Countdown, and temperature.

Perpetual Calendar is the year, month, day, and week of the Gregorian calendar from 1900 to 2099.

When rotating to the alarm clock function, enter the setting state of the alarm clock.

Temperature with automatic temperature measurement function, range-20 ℃ ~ 50 ℃, can choose Celsius temperature display and Fahrenheit temperature display