The installation of the radios is quick and easy, at least if the car has an ISO plug for the radio. Simply the ISO connector and the antenna cable plugged into the radio and there you go ... Took me only a few minutes. (4-5 min.) The radio fits perfectly into the bay of my Astra G, better than my previous radio from Medion. The operation of the radio is simple and even without instructions to understand, at least if you have ever operated a car radio. The sound is perfect with the standard boxes in the Astra. The AUX-in also leaves no wish unfulfilled. For MP3 discs, it takes a little while ( I would recommend to this radio, which can dispense with Bluetooth and USB connection and want to have a favorable radio.