The Super Autavia functions are as follows:

• Time of Day (Clock) is read as on a standard clock, with white hands for hours and minutes, and a seconds register at the bottom of the dial (6:00 o’clock). Heuer referred to this as the Super Autavia’s “White System”.

• When the crown is pulled out, the movement stops instantly, allowing synchronization with a radio time signal or other source of “official” time (referred to as a “hack” feature). Pushing down the crown to its normal position starts the movement again.

• Time of Trip (Stopwatch) is indicated by what Heuer called the “Red System” – hours and half hours are read by the red-tipped hour hand against the red divisions on the turning bezel; minutes are read by the red hand on the small minute dial (at 12:00 o’clock); and seconds (accurate to 1/5 seconds) are read by the red center second hand.

• The button in the crown starts and stops the stopwatch; the right pusher resets stopwatch hands to zero (when stopwatch has been stopped)

The Super Autavia utilized two movements and three cases over its lifetime, as follows:

• 1958: Super Autavia introduced, with Valjoux 76 movement; dial has baton markers for hours; case is chromium coated, low-profile; bezel is snap-on, coin-edge, with red markings

• Hour markers on dial changed from batons to arabic numerals

• Case made of “profectus”; case and bezel now match profile, depth (13mm) and construction of Master Time, Monte Carlo, etc.

• Movement changed to Valjoux 5

• 1967: Case made deeper (15mm) to match Master Time, Monte Carlo, etc.

• 1970: True 24-hour movement introduced, still based on the Valjoux 5