This s seems to work great so far. City and highway settings for sensetivity in town. Auto mute and VG2 DETECTION A long power cord with switch on lighter style plug but no power switch on unit itself. The only reason I gave it a 4**** rating and not 5 is because the barrel connector to power the unit is far too long and don't go all the way into the unit. This will cause shear pressure on the plug I the unit and in most cases that will cause circuit board solder connection to fail rendering the unit useless unable to power up so if to get this you might want to look into replacing the power cord. I know I will.