PD & QC3.0 Fast Safe Charging: Dual USB Ports & Type-C PD fast charge can charge two devices simultaneously. FM transmitter with built-in overcurrent protection, overvoltage protection, overcharge protection, overload protection, overheat protection and short circuit protection, ensure safe charging of the product. Advanced Bluetooth 5.0 Technology & Voice Navigation: Built-in Bluetooth 5.0 chip provides stable connection for streaming music over FM frequency and making hands free calls, can faster pairing with devices. Easy to answer or end a call with one key. No need to hold the phone. This handsfree call car accessories make your driving process safer. Secure Joystick Design: This fm transmitter selects user-friendly analog joystick controller, superior to competitor' usual rotary switch, which simplifies the whole operation by simply pulling the stick, saving the trouble. Hands free function ensuring driving safety, answer/reject/hand up/recall all in One key.