Bluetooth FM transmitter for music transfer and hands-free calling. It functions as an FM transmitter or Bluetooth hands-free device. The FM transmitter includes microSD readers and USB readers/charger. Compatible with all Bluetooth-enabled phones. Ideal for streaming music from services such as Spotify to your car's sound system or speakers. The device features a built-in microphone for calls and a response button for answering or hanging up. An LCD display shows the selected radio channel to easily adjust your stereo for optimal sound output. It automatically switches between music and calls when receiving or ending a call. Specifications: - Support for microSD cards - 2x USB sockets for USB memory or phone charging - A2DP music streaming When purchasing, please check the size and dimensions of the product to ensure it meets your needs. We have provided detailed information about the product, including its features and specifications. We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please feel free to reach out to us. We are here to assist you and will do our best to help. Thank you for choosing our product. We hope you enjoy it!