Features: Power Requirements 12V/24VUSB output:5V/500mA，can charge for various smart mobile phonesPower consumption:0.5WWorking temperate: -20?-50?Frequency Response:20Hz-15KHzBluetooth version:v2.1+EDRBluetooth transmission distance:10-15mFM emission frequency: 87.5~108MHz3.5mm audio cable length?About 25cm Package includes:1 x Bluetooth Car Mp31 x Remote Control1 x Audio Cable1 x User Manual