In Altitude Calibration Mode - Halfords Bicycle Computer Owner's Manual

3. In Altitude Calibration Mode

Tips:
1.The buttons you'll use in Altitude Calibration Mode: A, B.
2.Buttons for entering or quitting Altitude Calibration Mode: A+B (3's)
3.Buttons for quickly resetting the current altitude to zero: A+B (1's)
Buttons A+B: 1. In General Mode, push A and B buttons for 3
Button A: 1. Press the A button to change the plus sign to
Button B:
About Altitude Calibration:
1. If you are aware of your home altitude or basis altitude before riding, you can
directly adjust the current altitude data after you enter this mode.
2. If you do not know your basis altitude before riding or if you do not care
about the altitude of the starting point, you may return the current
altitude value to zero in the calibration mode by pressing both A and B
buttons at the same time briefly. In this way, the rider will still enjoy the
fun of learning the accumulated altitude gains during each ride.
seconds to enter Altitude Calibration Mode.
2. In this mode, press A and B buttons at the same
time briefly, and the current altitude value will
return to zero. It's convenient for quick setting.
3. Push A and B buttons for 3 seconds to quit this
mode and return to General Mode.
minus, or change the minus sign to plus.
2. Press the A button to change the value of a
flickering digit during setting.
Press the B button to move to the next digit in a
loop during setting.
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