[Premium Metal] The outer circle is made of premium aluminum alloy that's exquisite texture, durable, better heat dissipation, safer than plastic. [Enhanced Dual Mics for Clearer Voice] Dual microphones work in tandem to collect your voice from all directions, while the latest CVC 8.0 noise reduction technology blocks out more road noise, wind noise and other distractions. [Advanced Bluetooth 5.3]Car bluetooth 5.3 fm transmitter offer you a faster, more stable and smarter connection with CD-like sound quality, optimizing the transmission delay and connection defects of old Bluetooth version. [[PD 30W & QC 3.0 Fast Charging] Equipped with PD 30W Type-C and QC3.0 18W USB charging port, which can provide 4X faster speed than normal port. And 1 additional USB charge port (5V/1A) can also be used as a U disk port to play music. [3 Modes 7-Color Changing Light] Rainbow light design creates new atmosphere to the car interior space, making driving more fun. You can switch 3 Modes.