Button up at the back. If you hold it for a long time, there will be a voice prompt to modify the code number. According to the brand of the lottery car, the positioning will be different.

After opening, you can see that there are two buttons, one is to adjust the time and the other is to adjust the number of coins. Some control boxes have a small button directly, just turn it, and some need to press the button. You can set it on the blue controller at the bottom of the rocking car, which is to adjust the music time. You can also set the number and volume of coins here. Please refer to the instruction manual for details.

First, turn on the power of the rocking car and turn on the start switch. The volume and quantity of some coins can be measured by sensors. Generally, it can be disassembled and adjusted at the bottom of the rocking car. Some of them can be directly controlled, and you have to find them. If you still don't understand, you can call customer service.