Must first be activated via the Yadea app. In D/S/X mode at >=6km/h, press and hold the thumb shifter for 5 seconds until the buzzer beeps to engage cruise control at the current speed; releasing the throttle afterwards maintains that speed. Holding the handle brake or pressing the thumb shifter again releases cruise control. Manual explicitly warns not to use cruise control on complicated roads or in bad weather.
Fuente oficial: https://manuals.plus/yadea/ydx1-eliteprime-x1-electric-kick-scooter-manual (tier C). Traducción/paráfrasis fiel del manual oficial; no se ha añadido ningún procedimiento no documentado.