Wired Off-Road - Speedometer Calibration

In this video we cover calibrating the speedometer on your Wired Off-Road conversion kit. This also applies to all owners of DKD speedometers from QS Motors.
Key info:
Long press left button and then enter code 153
On "CC" screen, set circumference (in mm), =3.14*Diameter
On "PL" screen, first number = Pole pairs*internal motor reduction*chain reduction. For the GK-85x this is 5*2.368*(47/17 teeth)=32.
On "PL" screen, second number = Offset. Don't worry about this one, leave it at 8
To dial in speedometer, simply adjust the circumference number on the "CC" screen. To decrease speedometer value, decrease circumference.

[@bshul10]

Is there a setting for display brightness? thank you