The Alpina 669 is an open face calibre watch movement that features a winding gear with a rocker on the back side. Equipped with a stop function controlled by a pillar wheel, this movement offers various functions including a timer for 60 seconds (with a precision of 0.2 seconds) and 30 minutes. An alternative option for the timer is available, offering timing intervals of 30 seconds (with a precision of 0.1 seconds) and 15 minutes. The Alpina 669 movement is stem wind, enabling the user to wind the watch using the stem. Additionally, it features a sweep second hand and is known to have been popular during the period around 1962.