Press (1) button 3 seconds to turn on bike computer ;

Step 2:

Press Up + Down button together to enter the setting model;

Step 3:

Press (1) button twice to switch to Speed Unit setting model and you will see the KMS or MPH is flashing;

Step 4:

Press UP or Down button switch the Speed Unit to from KMS to MPH or MPH to KMS;

Step 5:

Press Up + Down buttons at the time for 3 seconds to exit setting model;
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