Product features:Flexible metal hose， suitable for all vehiclesAs soon as the auto starts， screen displays its battery voltage.Play music from USB disk and TF Card， TF Card readerAudio/music playback via Bluetooth A2DPSupport Bluetooth HFP/HSP，OPP，A2DP/AVRCP，PBAP ProfilesVoice prompts the caller number when a call comes in .Frequency ranges: 88.1 ~ 107.9MHzBluetooth Handsfree function: Full Duplex， DSP(Digital Signal Processing) Technology， CVC technology for echo cancellation and noise suppressionCharge for iPhone/Samsung/Nokia/Mot...Power switchDC9~26V wide power supply suitable for variety of vehicles; Operational instruction:1. As soon as plug this device into cigarette socket and the auto starts， screen displays its battery voltage2. Choose frequencyPress “+”/”-“button : Adjust FM transmits frequency from 88.1~107.9MHz， please make sure your car radio frequency is same as this device;3. Play songs from TF card or USB diskOnce connected power and plug in TF card or USB disk ， the player detects MP3 files inside TF/USB and plays songs ordinarily. Press “ < ” or “ > ”to play the previous or next song; shortly press “ ” to play or pause，4. Volume adjustmentKeep Press “ < ” or “ > ”5. Switch play modeKeep press ing “ ” to switch TF/USB play mode Bluetooth Operational I nstruction:1. PairingWhen this device is power on， LED indicator f lash es in blue and red ， activate your cell phone Bluetooth and search “X6"2. Enter connection password "0000".3. Select "X3" -- "Connection" -- "Connect with handsfree device".4. Paired( Make sure your car radio is turn on and the frequency is same as this device).5 . Streaming A2DP music from cell phone s and t ransmi ts to the car stereo audio :< Play previous song> Play Next songPlay /pause6. Bluetooth handsfreeMake a phone call: In connection status， dial phone number on cell phone directly，Answer a call: PressPress Twice to redial last callEnd a call: PressReject a call: Keep p ress ing Remote Control (option al )1. Digital remote control1. Play/Pause2. CH-: Decrease frequency3. CH+: Increase frequency4. Shortly press to play last song， long time press to last folder5. Shortly press to play next song， long time press to next folder6. EQ: Switch EQ mode7. - Decrease volume8. + Increase volume9. : Answer/end call10. : Transfer calls11. Digit key 0~9: Choose frequency or songs12. MODE Switch file source from SD/USB2 .Steering wheel remote control (option al )Install ation :For your driving safety， we especially provide a steering wheel remote control for the device. It is installation on car steering wheel， it makes much convenient & safely operation， let you enjoy your driving time freely Package Content:1x Car Kit MP3 Player Bluetooth Handsfree FM Transmitter Modulator1x User Manual Note: Memory Card Not Included!!!