SURROUNDING LIGHT AND LED INDICATOR: When the power is on, the surrounding light glows blue, which makes it easier to use in dark environments of the car and creates a cheerful atmosphere.You can easily and conveniently display the volume, auto voltage and FM frequency on the LED display.Dual USB PORTS AND SAFE CHARGING: Supports charging 2 devices simultaneously with overcharging protection.A USB port (5V/1A) with music symbol can read USB stick, another USB charging port (5V/2.4A) charges your intelligent device efficiently.Enjoy stereo streaming in the car and charge smartphones at the same time.THREE WAYS TO STREAM YOUR MUSIC: The Bluetooth FM Transmitter can stream clear stereo music in three different ways - A. The FM Transmitter can play music from Bluetooth enabled devices to car radio via FM signal.B. Stream music from SD card and support music files such as MP3/WMA/FLAC/WAV/APE;C. Transfer music from a USB flash drive (up to 32GB).HANDS-FREE CALLS: With this wireless device, you can conveniently answer/reject/redial calls via hands-free function and drive safely.Noise and wind are suppressed by CVC technology and ensure full duplex sound quality.EASY SETTINGS: Plug this wireless car kit into the cigarette lighter socket, tune the FM car radio to an empty station (87.5-108.0 MHz) and tune the FM transmitter to the same station.Pair with your phone via Bluetooth 4.2 and enjoy your music.