How do I change 1224 hours mode in Sonata 7982?

To change the time format from 24-hour to 12-hour mode on a Sonata 7982 watch, first press the mode button until you reach the time display. Then, hold the reset button until you see the hour digits blink. Use the adjust button to toggle between 12-hour and 24-hour formats, and press the reset button again to confirm your selection. Finally, press the mode button to exit the setting.