The standard version of the watch uses a black dial with large white luminousnumerals along with a red Alpina triangle on the second hand.
FORBES: Alpina Takes to the Air with New Pilot Watches
2.
They were all made with the same technical characteristics: a resistant and antireflective glass, an antimagnetic escapement, and a dial with large luminousnumerals and hands for a better visibility.
FORBES: Alpina Takes to the Air with New Pilot Watches