Bluetooth-Compatible 51 Receiver Wireless Car Radio USB FM Transmitter Kit Automotive Bluetooth-Compatible Receiver Feature: This product is mainly used in car scenes. It adopts the latest Bluetooth-compatible 5.1 technology and mature FM technology to make car fans easily enjoy car wireless music. No audio cable is required (traditional Bluetooth-compatible receivers basically need audio cable, resulting in a lot of clutter in the car). No delay. No slow run. Good compatibility, basically all cars and mobile phones can be used. Through the improvement of appearance and structure, the product size is compressed to be small and mini. Specification: Product model: FM01 Bluetooth-compatible version: V5.1 Working voltage: 5V Effective probability: within 10m Audio output: FM transmitter Default frequency: 95.0mhz SNR: 95dB Answer the phone: support Automatic return: supported Power supply mode: USB power supply (5V) Product size: 32.2 * 17.3 * 12mm Instruction: USB interface: USB interface is used for power supply. When in use, the product can be inserted into a USB interface with an output voltage of 5V, such as the car's own USB interface (5V) and car charging interface (5V). Multifunction keys: 1. Adjust FM frequency. After the product is powered on and before Bluetooth-compatible pairing, click the button to change the FM frequency (a total of 87.5mhz, 95.0mhz and 103mhz are optional). 2. When playing a song, click the button to pause playing. 3. Answer the phone: when someone else calls, you can click the button to answer the phone. Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. 1 x Bluetooth-Compatible Receiver 1 x Manual