This Bluetooth FM modulator uses the latest Bluetooth technology (V5.0), with lower power consumption, faster and more stable transmission. Connect the FM radio in the car to the frequency of the modulator and you will be able to play your favorite songs on your car's audio system from a Bluetooth device, micro SD card or USB stick. At the same time, the Bluetooth FM modulator has a hands-free phone calling function, supports connection to Siri or Google Assistant and supports voice commands to ensure safe driving of the vehicle. Amplified bass function Designed with a bass boost button, the PNI Valentine F250 adds more emotion and fun to your relaxing moments. You can play music via a USB stick, TF card or Bluetooth connection. You can change the bass as you like anytime, anywhere. FM Modulator PNI Valentine F250 Bluetooth 5.0 FM Modulator PNI Valentine F250 Bluetooth 5.0 Telephone call answering function The built-in microphone of this Bluetooth transmitter allows you to easily answer phone calls, hang up, reject a call or redial the last number. Switch between calls and music easily and safely. Two USB ports PNI Valentine F250 has two USB ports: one for playing music or charging the phone with 5V/1A output, and the other with 5V/2.4A output only for charging. The modulator has overload protection to charge the device safely.