KAKU FM transmitter Car charger with Bluetooth FM transmitterYour own radio station - 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 gadget, and then search for the appropriate frequency on the car receiver. Convenient calls - 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 ! Up to 2 devices at the same time - 2 USB ports allow you to renew the energy of up to 2 devices at the same time . Music from a flash drive or memory card - The gadget also easily plays audio files (in MP3 / WMA / WAV / FLAC / APE formats ) from a USB flash drive or TF / micro SD card connected to it. When the navigation is too quiet - the accessory will also be useful as a navigation voice amplifier . Thanks to the use of car speakers, all commands will be perfectly audible. Digital display - Practical display informs about the current voltage and transmission frequency . Specification: Brand: KAKUModel: KSC-184Material: PCVoltage (input): DC 12V-24VCurrent (output): DC5V / 3.4A (max)Bluetooth: 5.0Frequency: 87.5-108.0MHZRange (FM): 3-5 metersRange (Bluetooth): 5-10 meters (max)Ports: 2x USB, TF / micro SD card up to 32GBSupported audio formats: MP3 / WMA / WAV / FLAC / APEDimensions: 36 x 48 x 80 mmWeight: 33gCompatibility: iOS / Android