If you want a super accurate quartz without the time signal longines makes one that I think holds 5 sec per year
https://shop.us.longines.com/watch-s...SAAEgJX6PD_BwE
My son has a Khaki Field 38 mm. He may wear it for a week straight. Its lost it wind so he sets it then never resets the time during the week. Im sure hes not super particular about the exactness but its good enough for him.
I think a newer decent quality mechanical holds pretty good time. Hes had it for four years and its never stopped while wearing.
Plenty of videos and inexpensive tools if you want to try and regulate a watch yourself.
Dan Henry makes some cool retro style watches using the Seiko mecha quartz movement if chronos interest you at all. It is a pretty interesting movement.
https://danhenrywatches.com/products...mo-chronograph