Press and hold the CLOCK/TIMER button on the unit for more than 2 seconds. The message SELECT CLOCK OR TIMER should scroll onto the display. 2. Press the PREV or NEXT button to select CLOCK and then press the CLOCK/TIMER button again to confirm. The unit should show either 00:00 or AM 12:00 on 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 FWD or BWD button on the unit to adjust the hour. 4. When you have finished setting the correct time, press the CLOCK/TIMER button on the unit to end clock setting.