Product Description:1.Wirelessly transmit phone call from Bluetooth mobile phone to the car FM stereo system;2.With A2DP function、 stream music from Bluetooth device to car's FM stereo system3.Switch to Hands-free mode automatically from music playing status when receiving calls;4.Built-in Microphone4.Dual USB outputs 5V/3.4A5.Support USB Disk/Micro SD Card 6.Draws power from the cigarette socket in the car (DC 12V-24V); 7.206 channels optional from 87.5-108MHz;8.Elegant LED display numbers9.With Voice promptsSpecifications: Baluetooth version:V2.1 Bluetooth Protocol:AVRCP HFP A2DP Frequency Range:87.6-107.9MHZ Frequency stability:・10ppml Product lnput:12-24V Music Format :MP3、 WMA Micro SD Card (Max capacity):32G (No included)USB Disk (Max capacity)32G (No included)Product Total Output:5V/3.4A Loop mode :Normal Single cycle Repeat all Random EQ: classical Jazz pop ROCK vocal etc.Language: EnglishPackage included:1 x Bluetooth device1 x User Guide