,System function with a date electronic calendar to remind function, specific functions are as follows: 1, enter the start date (year, month and day) to days as a unit time, digital tube display date. 2, able to distinguish between the size of the number of days in different months and years to determine whether the basis of February for the leap. 3, you can enter a date and open the reminder function, there can be a song to remind the police until a specific DIP switches are known to express.

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