inputs.text: oehem standard excellent product - recently purchased unit via amazon koolertron received shipment earlier promised seller via dhl nervous opening package however honestly pleased see original like vw jetta car radiodvdgps receiver quite impatient get installed product quality including dvd quality picture gps connectivity excellent honestly looks functions like factory fit setup rds 510 downside negligible no option separately control bluetooth telephone volume bluetooth volume dependent volume level radiocdgps not sufficient clear telephone call requires manual adjustment volume call progress course negligible downside therefore no stars reduced minor flaw encounter seller must admit sellers responsiveness towards concerns queries answered quickly efficiently problem damaged wire bus connector without many questions promised free charge replacement service par excellence congratulate koolertron team highly recommend product certainly give full stars product suppliers customer service