car audio With SD card reader,USB interface voltage:12V audio peak power:150W rated impedance:4OHMs bandwidth:28Hz-3.5KHz car audioWith SD card reader,USB interfaceWith remote controlvoltage:12Vpeak power:150Wrated impedence:4OHMsbandwidth:28Hz-3.5KHztone quality:8"non pressed colorful paper cone bubbe edge car audio with USB and SD interface CA-103