1. Locate the “SET” key. Press it once.
  2. Use the UP and DOWN keys to set the hour.
  3. Press the “SET” key again.
  4. Again, use the UP and DOWN keys to set the minute.
  5. Press the “SET” key if the time is already set.
    Note: To set 12-hour or 24-hour modes, simply press the “UP” key while in time display mode.