Trividia True Metrix Air Owner's Booklet page 33

4. The month (number) flashes.
To change, press " ▶ " or " ◀ "
Button to select the month.
Press " • " Button to set.
5. The day (number) flashes.
To change, press " ▶ " or " ◀ "
Button to select the day.
Press " • " Button to set.
6. The year flashes.
To change, press " ▶ " or " ◀ "
Button to select the year.
Press " • " Button to set.
Note: Meter beeps every time a setting is confirmed (" • "
Button is pressed).
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Set Month
Set Day
Set Year