This is a professional audio accessory that will enhance your electric scooter experience. Add a fun and unique element to your ride. By connecting to the throttle and brake cables, it provides adjustable volume and unique brake sound effects. [Multiple Interface Ports]SK-I is equipped with multiple interface ports to compatibility with common scooters on the market, such as , Zero, , Kabbo, Nanrobot, etc.It keeps you safe even when you drive fast and loud. [Easy to install]No tools required for installation,The speakers can be easily installed without removing any parts of the scooter. Simply mount the base where you want it, connect the speakers to the corresponding locations on the fixed base, and connect them using the appropriate port wires. Soon, you'll have a cool sound device to enhance your riding experience. Colour:Black Material:plastic Package Contents: 1 x Voice Converter 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.