12V 2.4G Remote Control Bluetooth receiver. For first use or after replacing the battery, frequency matching is required. This product is designed for specific children's ride-on toys. Please ensure the purchased part matches the appearance of your original component. Step 1: Install two AAA 1.5V batteries (not included), observing correct polarity as marked inside the battery compartment. Close the battery cover. The indicator will flash three times to confirm proper battery installation. Step 2: Press and hold the frequency button (car select) for approximately 2 seconds until the indicator begins flashing. Step 3: Turn on the cars power supply; the indicator light will turn off. Step 4: If frequency matching fails (indicator remains on), turn off the power and repeat steps 2 and 3. Type Options: A: Blue Controller / B: White Receiver / C: Blue Receiver / D: White Controller Color: White & Blue Material: Plastic Package Contents: 1 x Children's Electric Car Remote Control OR 1 x Children's Electric Car Receiver Note: The package includes only the items listed above. Other accessories are not included. Due to lighting effects and monitor settings, the color in the image may slightly differ from the actual item. Measurement error allowance is +/- 1-3 cm.