Feature 1 Auto start after ignition Can display the current car battery voltage Below 10V alarm monitor your car battery at any time 2 Support U disk and TF card lossless music playback multiple audio formats MP3 WMA WAV FLAC 3 Audio music playback car bluetooth A2DP 4 Support bluetooth HFP HSP OPP A2DP FLAC PBAP profiles 5 Vioce prompts the caller number when a call cames in Digital display calling number 6 For other compatible music device or your MP3 MP4 player connect to the headset hole using the audio line also to beable to launch car audio through the FM transmitter let you enjoy the music 7 Can display staus information EQ frenquency point Volume Playing time 8 The bluetooth hands free blutooth headset with DSP full duplex for echo cancellation noise reduction function 9 Durble USB double charging cureent with 2 5A output charge for iphone ipad samsaug nokia mot 10 On phone After charging equipment display screen can display the charging current 11 Power switch DC12V 24V wide power supply suitable for variety of cars 24V power supply truck Specification Frequency channels 87 5 108 0MHZTransmit distance 5MAudio format MP3 WMA WAV FLACSNR 68dbFrequency response 20Hz 15KHZLeft and right channel saparation More than 60DBbluetooth version bluetooth 3 0 EDRbluetooth Profiles HFP HSP OPP A2DP AVRCP PBAPOperating voltage range DC12 24VPower consumption Less than 1WOutput voltage 5V 0 25USB maximum curent output 2 5A Package Included 1 X Car FM