Universal driving: Universal wheels are installed at the bottom of the vehicle, which automatically changes the direction of travel when encountering obstacles while driving. The arms of this sand toy excavator can be adjusted up and down. Playing with this construction vehicle can improve children's hand-eye abilities. (Warm reminder: There is a rotating wheel at the bottom of the excavator. Please remove the protective cover of the rotating wheel before playing.) With sound and light: with flashing lights and various sound effects. Different sounds can be used for different scenes. It can illuminate many parts of the body. The light changes color with the rhythm of the music, and the light effect becomes clearer. The light is soft and non-irritating, protecting children's vision development. Automatic excavation arm swing: After a certain driving time, the excavator will temporarily stop and swing the excavation arm up and down to simulate excavation work. Kids can take on the role of an architect and have fun with friends. Train your imagination and communication skills.