Fangrui Product Details 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.