Specification: Bluetooth specification:V2.0Rated voltage:12VBluetooth profiles:HFP， A2DPWorking distance:10m~15mFM transmit frequency:87.5~108MHzLimited voltage:9~26VUSB output:5V/2AWork temperature:0~50 CelsiusSupport file format:MP3/WMASNR:>60dBDistortion:<0.1%Frequency response:20Hz~15KHzBT microphone effective range:0.5~2mTransmit frequency modulation mode:Stereo digital PLL frequency loackColor:Black