Stable Bluetooth transmission: The advanced Bluetooth 5.0 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 mobile phone, making your driving safer. | Fast Charging: The car charger adapter can fast charge two devices simultaneously through the PD24W Type C port and 2.4A USB port. Built-in overcurrent protection, overvoltage protection, overcharge protection, overload protection, and short circuit protection, ensure safe charging of the charger adapter. | 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. | Broad Compatibility: It's suitable for iPhone 14 13 12 11 Pro Max Mini, iPad iPod Android tablet smartphone Samsung galaxy tab and so on mobile devices with built-in Bluetooth. And it fits 12V-24V cars and trucks. You can also play your favorite songs on your car sound through Bluetooth, TF card and USB flash drive.