Press the CLOCK/TIMER button to switch the unit over to time mode with time or –:– on display. 2. Press the CLOCK/TIMER button again, the unit should show either 00:00 or AM 12:00 on its display. Press PROG to change between 12 hours or 24 hours mode. 3. Use the PREV or NEXT button on the unit to adjust the minutes, then press the SEARCH UP or DOWN button on the unit to adjust the hour. 4. When you have finished with the setting of the correct time, press the CLOCK/TIMER button on the unit to end clock setting.