Stable Bluetooth Transmission: The advanced Bluetooth 5.3 technology can provide a stable connection for streaming music and handsfree calls through FM frequency. Built-in microphone, supports smart voice navigation from your phone, and it is easy to answer or end a call with one button. No need to hold the smartphone, making your driving safer.Fast Charging: The car charger can fast charge two devices simultaneously through the Type C port (30W Max) and USB port 5V/2.4A (12W Max). Built-in overcurrent protection, overvoltage protection, overcharge protection, overload protection, and short circuit protection, ensure safe charging of the charger.Bluetooth Handsfree Calling: Answer/ reject/ hang up/ recall all in one button. And it can automatically switch between incoming calls and music. Display and detect the vehicle voltage after plugged in. Enjoy voice control and safer driving with this Bluetooth FM transmitter.Hi-Fi Sound Quality & Noise Cancellation: Noise cancellation technology reduces background noise and provides you with high-quality streaming stereo music and clear calls. You can also play your favorite songs on your car sound through Bluetooth, TF card and USB flash drive.Broad Compatibility: It's suitable for iPhone 16 15 14 13 12 11 Pro Max Plus Mini, iPad iPod Android cell phone smartphone tablet Samsung galaxy tab and so on mobile devices with built-in Bluetooth. And it fits 12V-24V cars and trucks.