Made of high-quality materials, this 621K-2.4G-12V control box and 2.4G remote control is designed for children's electric cars. To connect, press and hold the forward and reverse buttons simultaneously. The indicator light will flash; once it stops flashing, the connection is successful. How to determine if the control box fits your car? Open the electric car and locate the existing control box. If the housing appears identical, the replacement should be compatible. For self-modification, please check the label on the receiver for specifications. Name: Children's Electric Car Controller Note: Due to variations in product batches, printed text and interface details may differ slightly but do not affect functionality. Color: As shown in images Material: Plastic Package Contents: 1 x Receiver 1 x Remote Control Note: Other items not included. Light reflection and differences in display screens may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm.