Shop name:Chong Qing Shuo Yue Ke Ji You Xian Gong Si 12V 2. 4G Remote Control bluetooth receiver.The first use (or replace the battery) need to matching frequencyProduct is Applied to Specific Children Riding Toys,Please Make Sure the Purchased Part Has Same Appearance as .Step 1. Install two AAA 1.5V batteries(not included), (note the positive and negative polarity inside the battery chamber), and finally close the battery cover, indicator will flash three times indicates that the battery is installed correctly.. Press and hold the frequency key(car select) for about 2 seconds and the indicator will flashStep 3. Turn on the power supply of the car and the indicator will turn off Step 4. If the matching frequency is unsuccessful (indicator not turn off), please turn off the power supply and repeat steps 2 and 3.Type:B:White ReceiverColour:White & BlueMaterial:PlasticPackage Contents:1 * Children's Electric Car ReceiverOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.