Rated operating voltage: 12VWorking voltage limits: 9~26VUSB Output: 5V/2AWorking Temp.: 0~50?Support Play format: MP3 WMADistortion: <0?1%Frequency Response: 20Hz-15KhzLeft and right channel separation:?60dBBT Version: Version 2.0Bluetooth sound processing: A2DP(Advance Audio Distribution Profile)Bluetooth transmission distance: 10M-15MBluetooth microphone effective range: 0.5~2MFeatures:Adjustable to any angles， and fit to all types of VehiclesFull frequency FM transmitterDigital DisplaySupport Line audio inputWith power off switch (USB direct connect)Support U Disk PlayerSupports MP3， WMA format musicBluetooth answer， hang up， reject， redial calls and other functionsBluetooth stereo music playEcho cancellation and noise suppression (CVC) technology during a callSupports dual USB output voltage， the maximum output 5V / 2AAutomatic power-off memory function