Bluetooth 5.3 Transmitter Receiver Wirele Audio For Car Music Headphone Speaker AUX Wirele Audio Adapter 3.5mm Jack For FM Radio Support TF cardSpecification:● Product name: usb bluetooth FM transmitter● Product model: W3● Bluetooth version: V5.3● Working voltage: 5V● Effective probability: within 10 meters● Audio output: FM transmitter● Default frequency: 95.0MHZ● Signal to noise ratio: ≥95db● Answer the call: support● Automatic return: support● TF card:support● AUX:support● Power supply mode: usb power supply (5V)Usb interface:The usb interface is used for power supply. When using it, you can plug this product into the usb interface with an output voltage of 5V, for example: the car comes with a usb interface (5V), and the car charger interface (5V).Precautions:1. The default frequency band of W3 is 95.0MHZ, which can be used directly. If there is a lot of playback noise, it can be adjusted to other frequency bands.2. When the radio of some models is turned on, the car's built-in usb interface will be powered off. At this time, if the W3 is plugged into the built-in USB port, it cannot be used. In this case, you can plug the W3 into the usb of the cigarette lighter and car charger. The power supply is used on the interface (the output voltage of usb must be 5V).3. W3 is used in some original cars with usb interface, which may be too noisy or unusable. It is recommended to plug FM02 into the cigarette lighter car charger for use.4. W3 has no automatic shutdown function, it is recommended to unplug it from the usb interface when not in use.5. When the W3 cannot be searched in the Bluetooth settings of the mobile phone or cannot be paired after being searched and clicked, it is recommended that you clear the previously connected Bluetooth devices in the mobile phone, and then restart the mobile phone and try again. ABS:Material Type 10gg:Item Weight Mini:Item Size USB FM Transmitter Handsfree Car Kit:Model Name FM Transmitter Bluetooth Receiver Audio Adapter:Special Features 5V:Voltage kebidu:Brand Name Mainland China:Origin CE,FCC,RoHS:Certification FM Transmitters:Item Type ABS:Material Type 10gg:Item Weight Mini:Item Size USB FM Transmitter Handsfree Car Kit:Model Name