12V 2.4G Remote Control Bluetooth receiver. The first use (or when replacing the battery) requires frequency matching. Product is applicable to specific children's riding toys. Please ensure the purchased part has the same appearance. Step 1: Install two AAA 1.5V batteries (not included), noting the positive and negative polarity inside the battery chamber, then close the battery cover. The indicator will flash three times, indicating the battery is installed correctly. Step 2: Press and hold the frequency key (car select) for about 2 seconds and the indicator will flash. Step 3: Turn on the power supply of the car and the indicator will turn off. Step 4: If the frequency matching is unsuccessful (indicator does not turn off), turn off the power supply and repeat steps 2 and 3. Type: C, Blue Receiver. Color: White & Blue. Material: Plastic. Package Contents: 1 * Children's Electric Car Receiver. Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the real thing. The measurement allows an error of +/- 1-3cm.