Compatible with Gokart Kit/ Gokart PRO/ Gokart , it will give your car the , adding a sense of competitive sports, visible speed, and warming up your love.<br> In addition to displaying the vehicle speed, it also integrates the function of controlling the driving mode. When it is turned on and connected, the mode can be switched by flipping the button, which is easy and convenient. (The vehicle must be at a standstill the mode can be switched).<br> The connection between Stopwatch and Gokart is simple, the instructions, the connection is not successful, it may be that the Gokart software version is too low .<br> Colour:black-red<br> Material:plastic<br> Package Contents:<br> 1 x Stopwatch<br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.