Function 1: Vehicle speed display Function 2: Switch driving mode Use: applicable to all karts of <br><br>Note: This product package does not contain 2X AAA batteries Operation Mode: Bluetooth indicator: flashing means not connected to the vehicle, off means connected to the vehicle Driving mode: ECO-safe mode / STRADA-novice mode SPORT-sports mode / -track mode Toggle keys: up/down-power on, long down-power off, long up-adjust brightness Power display: The indicator light is on to indicate that the battery power is low and the battery needs to be replaced. Colour:Black Material:plastic Size:50x60x38MM<br><br>Package Contents: 1 x The karting code table<br><br>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.