TRUCK ENGINEERING

This is a "Truck Engineering Series" cement mixer toy truck. 
It features bump'n go action. 
The mixing drum can be rotated manually or via a button to simulate real mixing action. 
The truck has functional lights and sounds for enhanced play. 
Doors on the truck open for added interactivity. 
It is typically friction-powered, requiring no batteries for movement, though some models may use batteries for lights and sounds.