1. [Clearer Calls Based on Enhanced Dual Mics] The 2 microphones work in to collect your voice from all directions, while the latest 8.0 noise reduction technology blocks out more road noise, wind noise and other distractions. Thus ensuring that both you and the caller can hear very clearly. Simply press the call button and enjoy easy hands-free calling and driving 2. [48W PD&QC 3.0 Fast Charging] This 48W car adapter charges faster than 99% of Bluetooth car adapters on the market 3. [Upgraded Bluetooth 5.3] FM transmitter uses the latest Bluetooth 5.3 technology, optimizing the transmission delay and connection defect problems of the old Bluetooth 5.1. Bluetooth 5.3 will bring you a faster, more stable and smarter connection with less sound quality loss. Uninterrupted calls and music experience. It takes only 1 second to complete pairing, and no need to repeat pairing after the first successful pairing with your device 4. [Hi-Fi Deep Bass & AUX Mode] Just press the button "b" and you will enjoy powerful deep bass and immersive stereo sound. The high-fidelity Hi-Fi sound quality will also make the music more dynamic and pleasing to the ear, taking your passion for music to a . 1. Dual microphones 2. Working status indicator 3. BASS button 4. AUX port 5. Light button 6. Multifunctional button 7. Negative power contact 8. Positive power contact 9. LED display 10. Type-C 30W charging port 11. QC3.0 18w charging port Colour:As Shown Material:plastic Package Contents: 1 * car transmitter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.