This product is a Bluetooth hands-free car charger MP3 player, using high-performance professional-grade Bluetooth module, built-in MP3/WMA decoder chip, music files inside USB flash disk can be played, wirelessly transmitted to car audio. Your mobile phone call equipped with Bluetooth can automatically switch to the state of hands-free call, and automatically switch back to music playing state after the call ends. MP3 music in the phone can be wirelessly transmitted to the car stereo through Bluetooth connection, and also supports hands-free calling. No need to convert cars, enjoy music easily, and make a hands-free call while driving, safe and enjoyable.Features:Able to be adjusted at any angle, suitable for all types of vehicles.Bluetooth answering, hanging up, rejecting, redialing and other calling functions.Echo cancellation and noise control (CVC) technologies during calling.Automatic power-off memory function, convenient in use.Professional manufacturing, stable performance, good reliability and durability.Easy installation, perfectly match to your original car.Specification:Condition: 100% Brand NewMaterial: PC+ABS Color: As picture shownPackage Weight: approx.57gRated working voltage: 12V~24VUltimate working voltage: 9~26VUSB output: 5V/2.1AWorking temperature: 0~50 degreesSupport playback format: MP3Signal to noise ratio: >60dBDistortion: <0.1%Frequency response: 20Hz-15KhzLeft and right channel separation degree: >60dBBluetooth version: Version 2.1+EDRBluetooth sound processing: A2DP (Advance Audio Distribution Profile)Bluetooth transmission distance: 10MBluetooth microphone effective distance: 0.5~2MFM transmission frequency: 87.5~108MhzTransmit FM mode: Stereo digital PLL lock frequencySupports:Support FM full frequency transmission functionSupport digital tube displaySupport LINE audio inputSupport Bluetooth separate power switch machineSupport USB flash disk playbackSupport MP3, WMA format musicSupport Bluetooth stereo music playbackSupport dual USB output voltage, supply power to other devices, maximum output 5V/2.1ASchematic description:Volume addition / subtraction / up and down / CH + CH-Power IndicatorLINE input holePower switchAnswer/re-telephone/play/pauseMicrophone holeHanging phone / FM / volume mode switchDigital tube display windowCigarette butt 12V-24VSupport USB flash disk playback / USB output 5V / 2 .1A (maximum)USB output 5V/2.1A (maximum)Product operation instructions: Bluetooth mode: Put the main unit on the cigarette butt base, turn the power switch to ON, and the product will automatically enter the power-on state after power supply. LED display frequency. When you use your mobile phone for the first time with Bluetooth hands-free connection, your mobile phone needs to be connected to the Bluetooth hands-free code. In the Bluetooth hands-free state, set the Bluetooth function in the phone to the enabled state, and search for the device of BC-06/Car kit, which is displayed on the phone. Select the device of BC-06/Car kit and pair it automatically. After pairing, Bluetooth will have a tone. Making a call: In the connected state, the phone number is directly dialed out by the mobile phone, and the voice is automatically sent from the car audio speaker. Answering the call: In the connected state, when a call is made, the button is directly connected to the call. After the call is connected, the button can be used to switch between the handset microphone and the machine microphone, and the button hangs up. Refusing to answer the call: When a call is made but you don't want to answer it, press the button to reject the call. Playing music stored on your phone: This product supports the A2DP function, which can play the music stored in the mobile phone and transmit it to the car audio through the Bluetooth hands-free FM to restore higher quality music effects. Short press the button for play/pause function, short button for next/previous song function. (Note: Some mobile phone versions do not support this function.) USB flash disk playback song mode: Insert the machine into the cigarette lighter of the car. After the player detects the song in the USB flash disk, it will play automatically. Press the key to enter the next and previous playback. Short press the key to play/pause. Long press the key to flash the digital tube frequency, short press to adjust the frequency plus frequency modulation. Turn on the car audio in the FM radio state, adjust the car audio transmission frequency and the car radio's receiving frequency to be consistent, you can play the machine music from the car stereo. Adjusting the transmission frequency: Press the button to enter the frequency selection state. At this time, the digital tube frequency flashes. Press the + and - keys to realize the FM addition/subtract function. Press and hold the + and - keys to achieve fast. With the FM addition/subtraction function, the machine can adjust the transmission frequency from 87.5~108MHZ. This product h