The device transmits waves to the car radio, which plays sound from a connected external source, microSD card, or storage media, for example. flash drive. Additionally, it functions as a hands-free set thanks to the built-in microphone and Bluetooth technology. The transmitter has a readable LCD display that shows the names of the tracks being played, frequency, and operational status information. Technical specification: power supply: 12/24V cigarette lighter socket Bluetooth 4.0 + EDR voltmeter Distance from microphone: 0.5-2 m Bluetooth range: 10 m Display: 1.4-inch LCD microSD slot: up to 32 GB File format: Mp3 / WMA FM frequency: 87.5 – 108.0 MHz AUX: input/output 1x USB: 5V/2.1A 1x USB input for connecting a storage device, e.g. pendrive display of track titles Product dimensions: 15x7.5x4cm Accessories: AUX cable miniJack-miniJack 3.5mm Spare fuse included in the package. Quantity pcs. in carton: 100