1. This scooter bluetooth dashboard can fit perfectly,a direct replacement for Nineboot ES1 ES2 ES4 electric scooter control panel. 2. Easy to install,Stable and material, stable and reliable 3. It can control speed control,bluetooth module,component coordination and security monitoring,is a centralized control board. 4. It is designed with external battery connector,you can use it to replace the worn or damaged control board. 5. Made of metal material,the housing can well protect the inner parts,making it can last for a long time. bars: adding shock absorption bars can prevent wire connector from falling off due to vibration Different batches, product appearance and color may be different, does not affect the use Colour: As Shown Material: Metal Package Contents: 5 * Controller 5 * Dashboard Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.