Honda Rebel 2017 Owner's Manual page 28

Instruments
3 Backlight brightness adjustment:
You can adjust the brightness to one of five
levels.
Press SEL button. The brightness is switched.
a
Press and hold SEL button. The backlight is
b
set, and then the display moves the
changing of the speed and mileage unit.
26
(Continued)
4 Changing of speed and mileage unit:
Press SEL button to select either "mph" and
a
"mile" or "km/h" and "km".
Press and hold SEL button. The speed and
b
mileage unit is set, and then the display will
return to the ordinary display.
The established setting can also be set by
turning the ignition switch to the OFF
position.
The control is automatically switched from
the setting mode to the ordinary display if
the button is not pressed for about 30
seconds. Even in this case, established
setting is maintained.