... /24 hour conversion, the default 24 hours.3. Alarm: In 2011, at 12:00 the alarm, a group of alarm, when ... di di di4. Power Supply: DC 6V/500MA power supply, external power, built-in button batteries, when power normal travel time ... ’t need to re-set the time. Home 100-240V external power supply.6, if the clock is running or set ...