Feature: Professional level Bluetooth ModuleFM transmitterLED display windowLine audio inputSupporting playing music by USB diskSupporting MP3/ MAV/ WMA/ FLV music formatAnswer/hang up/reject/redial calls via BluetoothBluetooth stereo music playCall Echo Cancellation and Noise Reduction( CVC ) technologyDual USB output voltage、 provides powers to other devices up to 5V/2.5AAutomatic memory function of power failure frequency point Specifications:Color: Black & GoldenRated operating voltage: 12V-24VWorking Voltage limits: 9-26VUSB Output: 5V/2.5AWorking Temp: 0-50＜Support Play format: MP3 WMA WAV FLVSNR: >60dbDistortion: <0.1%Frequency Response: 20Hz-15KhzLeft and right channel separation: >60dbBT Version: Version 2.1+EDRBluetooth sound processing: A2DP(Advance Audio Distribution Profile)Bluetooth transmission distance: 10MBluetooth microphone effective range: 0.5-2MFM transmission frequency: 87.5-108MhzFM transmitter mode: Stereo digital PLL lockingPackage Includes:1x Bluetooth FM transmitter Car Charger1x Audio Cable1x User Manual