Car Charger and Bluetooth Player: This product serves as a car charger with fast charging capabilities, as well as a Bluetooth player for music and calls in your car. Charger Function: To use the charger function, simply align the socket and insert the device you want to charge. It is compatible with fast charging, allowing for efficient and quick charging of your devices. Player Function: To use the player function, follow these steps:a. Tune the FM transmitter to a frequency between 87.5MHz and 108.0MHz.b. Adjust your car's FM radio to the same frequency as the FM transmitter.c. Connect the product to your smart device via Bluetooth, enabling it to transmit calls, music, and navigation to your car's stereo system. Alternatively, you can insert a micro SD card or U disk into the product to automatically play music. Material and Specifications: The product is made of ABS material and features a monochrome screen with a size of 1.1 inches. It operates on a power supply voltage of 12-24V and is powered through the car's cigarette lighter. Versatile Usage: This product can be used as a car charger, Bluetooth player, and FM transmitter. It is suitable for various gift-giving occasions such as weddings, birthdays, festivals, housewarming, and exhibitions.