Across the listed results, some sets explicitly include a rechargeable battery, others list specific batteries as required (sold separately), and one set specifies that no battery is used. If you need to know which exact set falls into each category, indicate which listing(s) to check.
App‑controlled sets typically let you drive forward and backward, steer the model, and control lights. Some sets also provide live data or performance feedback through the app (for example, real‑time performance metrics or status updates).
Some models feature independent suspension on each of the four wheels. Others provide working steering, functioning lights, and moving elements such as opening doors.
