1pc DS3231 4 4-inch large screen 4 4 digits 6 6 digits 8 8 digits digital clock Hourly hour from 8 to 20 o'clock (can be turned off), two alarms (can be turned off respectively), the main chip CPU is STC89C52, the high-precision clock chip DS3231 is used, and the error is 1 to 2 seconds a month. byJuly 5, 2026
