Features:Easy Installation: Plug and play, Easy to use.Memory Function: Fast Bluetooth pairing. Once paired, Auto-connect next time.Goose Neck Design: Flexible metal hose, Convenient to adjust its direction.Faster Charging: Comes with a 5V/2.1A charging port to charge most USB devicesBroad Compatibility: Universal design for all types of devices! Working as Hands-Free Calling and Car Charger for any devices with USB or Bluetooth including IPhone, iPods, Samsung Galaxy, other smartphone, GPS and tablets.Big LCD Display: Car battery voltage level will be detected and displayed on LCD while car starts; phone number for incoming calls & name of songs playing through TF Cards could be displayed as well (Note: songs via Bluetooth will not display).Specifications:Product Size: 7.9 x 3.9 x 1.6 inchesFrequency: 87.5-108.0 MHZUSB (Maximum support): 32GBTransmit Distance: >10MWith infrared remote control, easy operationWith 3.5mm line-in jack, support external audio devices.Package Included:1 x Car FM Modulator ,1 x Remote control, 1 x 3.5mm to 3.5mm adaptor cable, 1 x User Manual Before you use it, Please read the following, here are some tips for you!1.About the volume is low: You should first adjust the volume of the car stereo, and then adjust the FM transmitter volume. After you do them, you will solve the problem.2.About Poor radio reception: Do some radio Detection,listening to the radio, if there are some noise, then there must be a radio failure or a problem with the antenna. 3.About car modelsIt fit for the cars which Cigarette Lighters Voltage are between 12V-24V, and do not fit for 36V trunk.4.About ChargingUSB Charger output: 5V/2.1A,enough for you to use5.About ?Plug in the car, shaken shake will restart and Poor road conditions,Bumpy place,will start off again?Please Firmly inserted in the end, then turn left and right a few times, Hole car cigarette lighter socket to plug the card firmly to MP3, it is recommended to clean up the cigarette lighter hole, thus reducing the problem of poor contact.6.About ? Music has noise?Check whether the car FM stereo system’s frequency matches with the FM transmitter or not — Check your FM frequency channel is a clear channel without the interference of your local FM — station — Check whether the audio files are good quality compressed MP3 files or not — Check whether the car is passing the strong frequency interference area, such as train station, — tram station or mobile transmission station or not.