The Alpina 669 watch movement, used from 1936 onwards, features a Breguet hairspring. It is a manual-wind chronograph movement with 60-second, 30-minute, and 12-hour counters, controlled by a pillar wheel and displaying center minutes and seconds. The movement also includes a fly-back feature and a sub-second indicator.
The Alpina 669 features the following functions:
Fly-back Function
Manual-wind chronograph with 60s, 30min, and 12h functions, equipped with a pillar wheel and center-minute and -second hands.