Car fm modulator The FM modulator with a modern design and a compact shape is the perfect device for your car, making your trips more pleasant and comfortable. It has a charger with two USB output ports, built-in microphone, microSD card slot (max. 32GB), keys for selecting favorite tracks and a rotary knob for answering calls. It is easy and safe to use, guaranteeing the convenience of users, and thanks to the two USB ports you can charge two devices simultaneously, such as your smartphone or GPS. To use the device, set the same frequency on the radio and modulator and synchronize the Bluetooth connection between the phone and the modulator. It has an LCD screen that shows useful information. After pairing the modulator with your smartphone, you can answer calls using the green key. If you want to reject a call, press and hold the green modulator button.