Use this thread to share your vintage quartz, or to just learn about some!
I'll start with this 1979 Bulova Accutron Quartz housing the 2453.10 movement.
There is a trimmer (gold screw located below the crown) that allows regulation to a maximum of +/- 7 seconds per day. The quartz movement also has a pretty interesting feature that Bulova called "Accuset", and it is activated via the inset pusher above the crown.
When replacing the battery, or when power has been interrupted, you have to reset Accuset. To do that you:
- Pull crown to second (time setting) position when seconds hand reaches 12:00.
- Press Accuset button.
- Move the hands until the date changes. This establishes midnight. then set time. Move hands 5 minutes ahead of time standard being used, then back to correct time.
- When time standard being used (I use time.gov) reaches 0 seconds (1:00:00 for example), push crown to date setting position and set date.
If you think the watch has gained or lost time, reference the time standard used when setting the watch. When the standard reaches 0 seconds (again, 1:00:00 for example), press and release the Accuset button. The seconds hand will then either pause if ahead or will speed up (looks like an EOL indicator) if behind and then resume regular operation once synchronized.