Car charger with double USB port and FM transmitter. FM transmitter and Bluetooth technology allow you to listen to music stored on your smartphone via the radio. It is enough to pair the phone with the accessory and search for the appropriate frequency on the car receiver. The built-in microphone allows you to talk without having to hold the phone in your hand. And you only need one button to answer / reject calls or redial. Two USB ports. The transmitter has two USB ports that allow up to 2 devices to regenerate power at the same time. The gadget also easily plays audio files (in MP3/WMA/WAV/FLAC formats) from an attached USB flash drive or TF / micro SD card. The accessory can be used as a car navigation voice amplifier. All the necessary data is displayed on the built-in LED display. Specification: Connector: 2x USB Power supply: 12V, 24V Frequency range: 87.5 - 108 MHz