2.4G remote control toy car accessories. For first use or after replacing the battery, frequency matching is required. Suitable for children's electric ride-on toys. To connect, press and hold the forward and reverse buttons simultaneously until the light flashes. Turn on the car; when the light stops flashing, the connection is successful. Once the car power is on and the remote indicator light turns off, the connection is confirmed. Release the buttons to begin using the remote control. Specification: Material: Plastic Remote Controller Size: 15x8.5x2.5cm / 5.91x3.35x0.98 inches 1816 Receiver Size: 7.5x3x8cm / 2.95x1.18x3.15 inches Update Remote Size: 14x8x2.5cm / 5.51x3.15x0.98 inches JR1816 Receiver Size: 7.6x8x3cm / 2.99x3.15x1.18 inches Red Chip Receiver 12V Size: 9x8x3cm / 3.54x3.15x1.18 inches Package Includes: Optional Remote Controller or 12V Receiver Note: This product is designed for specific children's ride-on toys. Please verify that the purchased part matches the appearance and model of your existing unit. Requires two AAA batteries (not included).