[ Double Loud Microphone for Handsfree Calls] The dual microphone car FM transmitter is equipped with the latest CVC8.0 noise cancellation and Digital Signal Processor (DSP) technologies, working in tandem to pick up your voice from all directions. Thus giving you and your caller a higher level of calling experience. [ 9-Color LED Design & Light Off] The car FM transmitter is designed with 9-color LED lights: red, blue, green, yellow, purple, cyan, white, rainbow, rainbow stream and light off. You will see the pulsing light in the dark and adjust the desired color. Facilitates operation and safer driving while driving at night, or you can turn it off. [ QC3.0 Fast Charger & Dual USB Ports] The car charger with two USB ports, can charge 2 devices at the same time and provide high-speed charging to driver and passenger. QC3.0 fast charging port is 5V/3A, up to max 18W. Another USB port is 5V/1A, can charge devices as well as can read music files in the usb stick, such as MP3, WMA, WAV format. [ Immersive Hi-Fi Audio & AUX Mode] You can enjoy the fantastic deep bass music by pressing B button. Hi-Fi sound quality will also make the music more dynamic and pleasant to your ear. In addition, you can listen to music by 3 ways by connecting Bluetooth devices/ AUX cable/ USB stick (≤32GB). So you can connect the FM transmitter to your car via the included AUX cable and enjoy the CD-like sound quality. [ Activate Siri & Google Assistant] LENCENT car Bluetooth FM transmitter can receive clear voice commands to ensure safe driving. You can stay fully focused on the road by engaging Siri or Google Assistant to make phone calls, send messages or get directions. This option allows you to enjoy safer driving.