A useful option when driving the new 911 GT3 on the racetrack, the Chrono Package is available for the CDR-30 audio system and includes a swivelling, dashboard-mounted analogue and digital timer. It is operated via the steering column stalk for the on-board computer. The analogue display shows the elapsed hours, minutes and seconds. Seconds, tenths of seconds and hundredths of seconds appear on one display, while at the same time there is a digital display on the instrument cluster.