1、Support for Gregorian calendar month, day, temperature, hour (24-hour system), minute and week display, on time alarm and the hour is displayed in 24-hour format. Displaying 1-12am in the morning and 13-23pm in the afternoon, it can be clearly seen whether it is afternoon or early morning. 2、Support for 50-year perpetual calendar query, date and time memory function. The display is turned off when power is off but continues to go, there is no need to reset the date and time when power on again. Built-in battery, which saves time and settings in the clock. 3、Support for hourly on time alarm function (no time reporting from 22:00 to 6:00), when the switch is turned on, it has voice and music time telling at daily 7:00 to 21:00, the music of each timekeeping is different. 4、Support for 8 groups of alarm clock function and ringing each time, it can set different time, there will be ringtone and voice remind when reaching the time, lasting 1 minute. 5、Support for six groups of birthday reminder functions, automatic test temperature and temperature ranges -9-50℃. Automatic brightness adjustment function: Every day from 22:00 to 7:00, the brightness of the display will be automatically reduced by half.