The HX Electric Scooter P Settings Menu is accessed by pressing the Power and Menu buttons together for a few seconds until P0 is displayed.
To enter the P0 menu settings category, press the Power button. Then press the Menu button to toggle to either 0 or 1 (km/h or mph). Then press the Power Button to confirm your choice and exit P0.
To toggle through the remaining menu-settings categories (P1, P2, P3, P4), press the Menu button.
In short: Press the Power button to enter the particular category, press the Menu button to toggle through the options and select. Press the Power Button to confirm your choice and exit the category.