Product name: usb bluetooth FM transmitter Product model: FM01 Working voltage: 5V Effective probability: within 10 meters Default frequency: 95.0MHZ Signal to noise ratio: greater or equal to 95db Answer the call: support Automatic return: support Power supply mode: usb power supply (5V) This product is mainly used in in-vehicle scenarios, using the latest Bluetooth 5.0 technology and FM frequency modulation technology to allow car fans to easily enjoy in-vehicle wireless music. colour: black Material: ABS Package Contents: 1 x FM Transmitter Only the above package content, other 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: Please allow slight errors due to manual measurement. Please make sure you don't mind before bidding. Color may vary depending on your monitor, please understand. Note: Hello, please pay attention to your shipping address when purchasing products. If your delivery information (e.g. name, street, house number, doorbell/email without name, etc.) is incorrect, the order will not be delivered correctly