This product is mainly applied to the car scene, using the latest Bluetooth 5.1 technology and mature FM FM technology, so that fans can easily enjoy the car's wireless music. Specification: Product name: USB Bluetooth FM transmitter Product Model: FM01 Bluetooth version: 5.1 Operating voltage: 5V Effective probability: within 10 meters Audio output: FM transmitter Default frequency: 95.0MHZ Signal-to-noise ratio: 95db Receive calls: Support Auto Return: Support Power supply: USB power supply (5V) Features: USB interface: USB interface for power supply. When using, you can plug this product into a USB interface with an output voltage of 5V, for example, the car comes with a USB interface (5V), and a car charger interface (5V). Instructions: 1. Plug in the USB interface Plug FM01 into the USB port and power it on, the blue LED will light up, click the button to switch the frequency, the default is 95.0 2. Car FM frequency is consistent with Bluetooth Open the Bluetooth settings of the mobile phone and find the pairing name FM01 after successfully pairing the blue light stops flashing 3. Mobile phone Bluetooth matching Turn on the car radio and adjust the frequency of the radio to the same frequency as FMO1 4. Mobile phone Bluetooth matching Start playing music or navigation Remarks: The above only needs to be set up for the first time, then use Bluetooth automatic connection, and FM automatic connection. Package includes: 1x USB Bluetooth 5.1 FM Transmitter 1x Instruction manual