Conversion Between Imperial And Metric Units: U for units, 1 for imperial, 2
for metric. Speed and mileage units can be converted by "+" " or " -" buttons,
short press " "i " " button to confirm, long press " "i" button to confirm and exit
the general setting status. The default unit of the meter is metric.
Note: The meter will automatically turn off if the motorized vehicle is not used for
more than 5 minutes after powering on.