2.4G remote control toy car accessories. The first use (or replace the battery) need to matching frequency. Suitable for children's electric toy cars. Hold the forward and reverse buttons simultaneously, the light flashes, turn on the car, the light stops flashing, and the connection is successful. Turn on the car power,remote indicator light wll be off,indicating the successful connection with the car,release the button,now the remote control can be used. Specification: Material: Plastic Size Chart: Remote Controller Size: 15x8.5x2.5cm/5.91x3.35x0.98inch 1816 Receiver Size: 7.5x3x8cm/2.95x1.18x3.15inch Update Remote Size:14x8x2.5cm/5.51x3.15x0.98inch JR1816 Receiver Size:7.6x8x3cm/2.99x3.15x1.18inch Red Chip Receiver 12V Size:9x8x3cm/3.54x3.15x1.18inch Package Includes: Optional Remote Controller or 12V Receiver Note: This product is suitable for specific children's riding toys, please ensure that the purchased parts have the same appearance and model as the parts. Powered by two AAA batteries(not included.)