Safe and Secure: This Bluetooth adapter has FCC authorization, the FCC ID is: 2A4RO-M6 , and has CE certification, complies with regulations, are legal for sale, operate in accordance with FCC authorization, comply with applicable industry standards, and do not interfere with other electronics. For those related certificates, please check our image display 3-IN-1 Design: Support bluetooth receiving (RX), bluetooth transmitter (TX), FM transmitter mode. Equipped with HD LED display, working status and Bluetooth mode are clearly visible. With multi-function buttons, one-key switch mode, or play/pause music, simple operation. Built-in high-definition microphone, support wireless music listening, hands-free call, navigation, let you drive more safely