The Bluetooth V5.1 chip provides an ultra-secure connection between your device and the bluetooth car. Faster and more stable connection than Bluetooth v4.2 to avoid unstable connection as well. You can make hands-free calls, text, navigate with Siri/Google Assistant or other voice assistant without any distractions while driving. 20W PD & QC 3.0 Efficient Charging- The car transmitter has 3 charging ports. The first is equipped with QC 3.0 Quick Charge, which charges your device to 50% in just 30 minutes. The second is equipped with a music icon. That can both charge your device and read USB drives to play music. The third is Type-C 20w PD, which is 4x faster than standard car charger. Upgraded Microphone Design- Our car bluetooth adapter is equipped with an upgraded microphone that can pick up sound from all directions while driving. The bluetooth fm transmitter is able to reduce noise for clearer hands-free calls. One-Key Bass Adjustment- The bluetooth car transmitter is equipped with a "b" key, which can provide you the bass sound effect to enhance the songs like heavy bass songs or light music. You will have a different listening experience. In addition, the bluetooth car transmitter supports playing music from Bluetooth devices or USB sticks. Easy to set up - Plug the car bluetooth adapter into the car cigarette lighter socket and modulate the same frequency as your car's. Then connect your device to the bluetooth transmitter. The bluetooth transmitter can be used with any Bluetooth device such as iPad, iPhone, iPod, HTC, Galaxy, Sony, MP3 players, tablets and Android smartphones.