In General Mode - Halfords Bicycle Computer Owner's Manual

Button C: 1. In General Mode, press the C button to enter Data
2.In Data Setting Mode, press the C button to exit and
Button D: No function.
How do you enter Data Setting Mode after initiating the computer?
After initiating the computer by pressing the A, B, C buttons at the same
time for 3 seconds, press any button to quit auto-testing display, and
then select units. After unit selection, press the B button for 2 seconds
to enter Data Setting Mode.

2. In General Mode:

Tips:
1. The buttons you'll use in General Mode: A, B, C, D
2. Button for changing the function display: A
3. Button for resetting the trip data: A (3's)
4. Button for entering Data Setting Mode: C
5. Buttons for entering Altitude Calibration Mode: A+B (3's)
Button A: 1. Press the A button to move to the next function
Button B: 1. Press the B button to turn on the EL backlight.
Button C:
Buttons A+B:
Button D:
Setting Mode.
return to General Mode.
display.
2. Press the A button for 3 seconds, and you will
reset the following data:
AVG SPD, MAX SPD, DST, RTM, ALT, MAX ALT,
AVG RPM, MAX RPM.
2. Press the B button for 1 second, and the
temperature will be displayed.
Press the C button, and you'll enter Data Setting
Mode.
Push both buttons for 3 seconds, and you'll enter
Altitude Calibration Mode.
Press the D button to switch to Bike 1 or Bike 2.
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