Bluetooth FM Transmitter, LDesign Wireless in-Car FM Radio Adapter Car Kit with Handsfree Call | AUX Input | HD 4-Modes Music Play Applicable for iPhone, Samsung and Other Smartphone,Tablet-Gold Versatile Multifunctional Bluetooth FM Transmitter for CarLDesign Bluetooth hands-free FM transmitter, not only lets you stream music and hands-free calls directly from your Bluetooth device to your car FM stereo system via FM radio signal ( 87.5-108.0 MHz), but also can play and transmit the MP3 music of USB Flash Drive and TF Card plugged in the transmitter,which can make your driving more safer and interesting Easy to Pair&Fast Adjust Station1)turn on car FM to an empty channel(87.5~108MHz)(eg:107.9) with pure rustling sound; 2)The diameter of the product is 22mm/0.87inch. plug G7 into car cigarette lighter socket tightly and start the car; 3)click the "CH" key by the side of G7, press the "+" or "-" to adjust the frequency same as car FM(eg:107.9); 4) turn up the "G7" volume to 30 MAX by long click "+" and phone volume to max. increase car FM to adequate volume to receive HD sound 4 Modes Play Music,Excellent HI-FI Stereo SoundPlay music via USB Flash Drive and TF Card (support MP3/wma/wav/Flv format & support up to 32GB) with MP3 file; Play music with the 3.5MM aux cable; search ''G7'' Bluetooth in your device and connect.built-in microphone with Noise and wind suppressed by (CVC) technology to create full duplex sound quality.anti- statics design, enjoy the lossless music in your car.Micro phone range is 2meters Hands-free Call,Safe DrivingSearch ''G7'' Bluetooth in your device and connect, close your car window,click "call" key when a call comes,then you can answer/reject/redial.One Button to Power off,no need to worry about draining battery.Large Screen can show incoming call number, voltage level in car battery, volume, FM frequency and song name.Note: when restart the car, ignore "G7"Bluetooth in your device and reconnect with "G7" Broad Compatibility&Mini Design Lightweight and portable design. A great necessity kit for older car. Universal design for all types of devices(except the truck and bus)! It is Working as Hands-Free Calling and Radio adapter for any devices with USB or Bluetooth including IPhone, iPods, Samsung Galaxy, Google Nexus or other smartphone, GPS and tablets Turn on car FM to an empty channel(87.5~108MHz)(eg:107.9) with pure rustling sound The diameter of the product is 22mm/0.87inch.plug G7 into car cigarette lighter socket tightly and start the car Click the &#034;CH&#034; key by the side of G7, press the &#034;+&#034; or &#034;-&#034; to adjust the frequency same as car FM(eg:107.9) in 3~4 seconds,when you hear a beep means it connect successfully Close car window, turn up the &#034;G7&#034; volume to 30 MAX by long click &#034;+&#034; and phone volume to max. increase car FM to adequate volume to receive HD sound you can long press  &#034;+&#034; or  &#034;-&#034; key to increase or decrease the volume. if you hear static,maybe your channel has been occupied that can&#039;t avoid,you need choose a blank channel again and re-adjust the channel of the car radio station is same as the transmitter.then it stop noise Its working voltage is 9V-26V Search &#034;G7&#034; Bluetooth in your device and connect, if someone call you,  press &#034;call&#034; key to answer a call. you speak loudly and your caller also increase phone volume then can receive a good sound Double press can reject.close car window to avoid outside noise. when restart the car, ignore &#034;G7&#034;Bluetooth in your device and reconnect with &#034;G7&#034; Bluetooth sound processing A2DP, which can offer a high quality sound for talking and music playing. Compatible with Bluetooth devices; great for older car. LED screen show FM frequency and car voltage. Our products have passed CE,ROHS, MSDS,FCC international authoritative certification backed by safeguard  with premium quality and thousands of test.