More Powerful Microphone for Better Hands-Free CallingThis car FM transmitter uses a more powerful microphone, greatly amplifies sound reception and strengthens sound quality, giving you a higher level of experience.3 in One: USB QC3.0 and PD 3.0 Type-C Ports Dual USB ports and one Type-C port for fast charging allow you to charge 3 devices at the same time and provide high-speed charging to driver and passenger. The charging speed is 4 times faster than conventional charging.Noise Canceling: Bluetooth V5.0 with Wide Compatibility The Bluetooth V5.0 chip establishes an ultra secure connection between your phone and car FM transmitter with the Bluetooth adapter. Faster torque and more stable sound than bluetooth v4.2 avoid unstable connection. Widely compatible between any device that supports Bluetooth and car in 12-24V.9-Color LED Design and Light OffThe car FM transmitter is designed with 9-color LED lights: red, blue, green, yellow, purple, cyan, white, rainbow, rainbow flow and light off. You will see the pulsating light in the dark and adjust the color you want. Facilitate the operation and safer driving when driving at night.