Plug the device into the cigar lighter port and press the FM button for 2 or 3 seconds till the screen flashing. Paired your cell phone with the Bluetooth FM adapter, the built-in microphone provides you with an amazing hands-free function. Just press the button to answer a call and liberate your hands when on calls. Let you drive safely. 

Features:

• Bluetooth Version: 4.2
  
• Bluetooth Agreement: A2DP HS/HFP AVRCP
  
• Interface: High Speed USB2.0*3
  
• LED Screen: FM,Car battery voltage level and playing songs can be displayed on LED screen.
  
• Power: Cigarette Lighter Power Supply
  
• USB Output: 4.8A
  
• Support TF Card/U-disk up to 32GB
  
• Power Supply: DC12-24V
  
• Support Format: MP3/WMA/APE//WAV
  
• Rated Current: 50-100mADC12V
• Bit Rate: 64-320kbps
• FM Frequency Range: 87.5-108MHz
  
• SNR: 85db（FM:65db)
  
• Harmonic Distortion: <0.05%
  
• FM: <0.1%
• Operating Temperature: 0℃-60℃
• Suitable Car Models: DC12V -24V Cars
  
• Connected Range: up to 10m
• Compatible with Bluetooth enabled devices and Android & iOS Phone, like iPhone, Samsung, HTC, Blackberry, iPad, iPod, Tablet, or MP3, MP4 Players etc. Works under the voltage of 12/24V. Transmit music from cellphones to the car FM stereo system wirelessly, full channels range from 87.5 to 108.0MHz.