I found this circuit board in an old toy car. What does it do?

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I found this circuit board in an old toy car. Does anyone know what it is for and how to use it?
 
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Kind of obvious but looks like low cost electronics for remote controlled toy car.

Without the proper matching remote it's more or less just a piece of electronic waste.

If you wish to build an RC car, then you may consider to purchase a cheap kit, in proper condition, with a manual and every necessary piece included.