The FM transmitter adds your car a bluetooth function by transform information to FM signal. With it you can connect your car with the cellphone easily. You can listen to your favorite cellphone music through the car audio whenever and wherever. You can go on hands free talking freely and never worry about the safety while driving .Function:Bluetooth FM Transmitter ----The FM transmitter turns the audio input (music and voice.etc)into independent channels of FM information， and the car audio receive the signal and play it out. ---- It can connect your car and your cellphone， fit to all types of vehicles， even the car is without bluetooth function originally. ---- As independent channels ， it won’t be bothered by other FM channels.Bluetooth Hands Free Talking---- In the Bluetooth Model， it will switch to hands-free talking mode automatically from music model when there is call.---- Bluetooth answer ， hang up ， reject， redial calls and so on . Taking Echo cancellation and noise suppression (CVC) technology to ensure you a quiet environment.Bluetooth Music Player --- Bluetooth connecting. After paired， you can play the music of your cellphone in the car audio， supporting MP3 ， WMA format music.---- Automatic power-off memory function. If the equipment sudden powers off ， It will recover to the ex-time frequency and song playing info when you restart it .Digital display--- The screen clearly shows information about the telephone calls and the playing songs.USB Car Charger for Cellphone --- Quick charging， can charge two electric devices at the same time. --- Two USB port output (each 5V/2.1A ).--- For all kinds of devices with USB-chargingFeature:----- Multi-functional .With it you can answer calls freely while driving ， enjoy the music whenever and wherever. It can also wok as mobile phone charger with two out port. Shortly， it can almost meet your every demand when driving ， so you don’t need any other similar devices. ----- Ultra Small and Smart . The length is only 9cm， you can even hold it in your palm So it takes little space in the car. it is also very easy to operate.-----Safe and Convenient. It ensures your safety and convenience when answering calls while driving. You can also adjust the volume freely.---- Enjoy Music and Life. Just put your favorite music into cellphone or a U disk， then drive out and enjoy your life in your way .---- Efficient Charging. Extremely fast charging with high total output current of 5V/4.2A， it will save you a lot time when it is emergency. Item Description:Model Number:BC08Product Size: 9*7*2.7CMWeight:58gWorking Temp. : 0~50 oCRated operating voltage:12VWorking voltage limits:9~26VUSB Output:5V/2.1ASupport Play format: MP3 WMASNR: >60dBDistortion: <0.1%Frequency Response: 20Hz-15KhzLeft and right channel separation: >60dBBT Version:Version 2.0Bluetooth sound processing: A2DP(Advance Audio Distribution Profile)Bluetooth transmission distance: 10M-15MBluetooth microphone effective range: 0.5~2MFM transmission frequency: 87．5~108MhzFM transmitter mode: Stereo digital PLL lockingPackage Includes: 1 body 2 Manual Note:1 when the machine in FM transmitter ，volume will not be too much (generally 25 or less position) in order to avoid sound distortion， adjust the volume using the car stereo adjustments.2. The machine FM transmitter built-in antenna， while also should try to avoid using strong local radio frequency signals to get better sound quality.3. Due to various differences in the phone itself， the method used in the Bluetooth may be different in practice.4. In the player again after power off， and some mobile phones may not automatically connect function， so need to use a manual connection again.5. Although this product is compatible with more than 95% of the current market major brands mobile phones， but there are still some phone are not compatible， in the purchase process please note. 6. During a call， adjust the