This scooter's Bluetooth dashboard is a direct replacement for the Ninebot ES1, ES2, and ES4 electric scooter control panels. It is easy to install and made of durable, stable, and reliable materials. The control panel manages speed, Bluetooth connectivity, component coordination, and security monitoring. It is a centralized control board. Designed with an external battery connector, this control board can replace worn or damaged units. Constructed from metal, the housing protects the internal components, ensuring longevity. Adding shock absorption bars can prevent detachment due to vibration. Product appearance and color may vary slightly between batches but do not affect functionality. Color: As Shown Material: Metal + Plastic Package Contents: 1 x Controller 1 x Throttle Finger Note: Light reflection and different displays may cause the item's color in the picture to differ slightly from the actual product. The measurement error allowed is +/- 1-3cm.