The device transmits waves to the car radio, which plays sound from a player connected to the transmitter, an SD memory card, or a USB flash drive, for example. flash drive. Additionally, it functions as a hands-free set thanks to the built-in Bluetooth. Technical specifications: voltage limit 12-24 V, power consumption 1 W, operating temperature -20°C - 50°C, supported audio formats: MP3/WMA, SNR > 60dB, distortion 0.1% version of Bluetooth - BlueCore 3.0 A2DP Bluetooth transmission range 10-15, microphone range 0-2 m, transmission frequency 87.5 - 108 MHz transmission band 20 Hz - 20KHz output power charging DC 5V / 2.1A Product features: - hands-free kit - LCD display (incoming call number) - clear, surround sound (Clear Voice Capture technology, D solution.S.P) - built-in equalizer - full control over the quality of transmitted sound - built-in USB charger 5V/2.1A - support for USB, SD, MMC memory - playback of MP3, WMA files - remote control with 20 buttons