Features: Bluetooth Version: V5.0 + EDRRead MP3 WMA files from USB flash disk or SD MMC card transmit music signal over car FM tuner then enjoy music via car stereoSupport external audio playerDraw power from the cigarette lighter in the car (DC12V power)Rotary joint design more convenient to adjust the device positionFrequency and track memory functionFull FM Channels (87.5 ~108.0MHz)LCD Screen Display Package Content: 1x Earldom M42 Wireless Car Kit FM Transmitter