Ducati Monster 821 Owner's Manual page 130

Press button (1) to make the EXIT box flash; press
button (4) to quit and go back to the previous window.
- Km/h: if this unit is set, the following values will
have the same units of measurement:
1) TOT, TRIP A, TRIP B, TRIP FUEL: Km
2) Vehicle speed and SPEED AVG: Km/h
- mph: if this unit is set, the following values will
have the same units of measurement:
1) TOT, TRIP1, TRIP2, TRIP FUEL: miles
2) Vehicle speed and SPEED AVG: mph
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