Firstly, make sure it is in the Timekeeping Mode.

DST Setting Module : 3229/3421

-Upper display Day of weekDate

-Lower displayCurrent Time

<Timekeeping Mode Screen>

*Holding down (B) button changes

the number at high speed.

In the Timekeeping Mode, press (A) button. The seconds digits flash on the display.

1.

Press (C) button once.

2.

While the hour digits are flashing, press (B) button to change the number.

3.

4.

Press (A) button to return to the Timekeeping Mode.