Movement
Caliber: ETA 2893-2 automatic
Functions: hours, minutes and seconds, 24hours hand, date display in window
Size: 11 1/2" Jewels: 21
Power Reserve: 42 hours
Hz: 4/28'800 vibrations per hour
Finish: oscillating weight on ball bearing is rhodium coated, decorated "Côtes de Genève", and bears the engraving of an airplane.

Case, Dial & Hands
Material: stainless steel
Diameter: 42mm without crown
Height: 11.20mm with see-through back
Finish: satin/polished
Waterproof: 20 atm
Back: screwed see-through mineral glass
Glass: sapphire AR
Dial: silver with SL
Hands: nickel with SL Crown: screw-down

Special features
topring is positioned by a spacer system at 4h hatched crown (design early 50is)
three excecutions available: GMT Version (4 hands, three timezones)
Purist Version (pure 24h watch, 3 hands, two timezones)
GA Version; special excecution for pilots (4 hands, three timezones, 24h hand arrow-tipped with SL, slender 12h hand with SL)

Leather strap
Material: calf
Colours: brown
Width: 22mm horns / 22mm buckle
Buckle: belt
Ref: 3887.19-LB9