At one time I modified an aluminum gear from Stock Drive Products (cut off part of the hub and insert a piece of brass tubing as a bushing). But it turned out it didn’t cost much more to have them fab a small run of custom gears.
I have also fixed the drive rollers using a polyurethane rubber (HTPB) more commonly used as a binder in solid rocket fuel.
I don’t wear a watch.
How do you then know the time? Interesting but obvious.
A cell phone?
Your internal clock?
I am with you, I have not been keeping the exact minute.
I wore one of these for a while. I got a lot of good compliments on it, even though it was kind of dorky. Didn’t work that well in the daylight. But most of my conscious hours tend to take place at night anyways. It eventually went caput caused by abuse on my part. I’m sure I’ll buy another especially for around $5 or less. Surprisingly the finish didn’t chip off like other not so cheap watches I have bought. Now I wear a Casio F91W. It’s probably the best watch I’ve owned. My partner wears a CA53W. The built in calculator proves very useful for her work.
TMI?
I wear a Megalith led watch.It’s pretty good.
This is the link to my watch, if you are interested,check it out：8051M | Analog Digital Men Watch | Leather Band – megalith watch
i still have my syncronar.
replaced the batteries a few years ago when i got it at a yard sale.
if you keep it in the light the solar panel will keep it working.
i also have a few others.
if you dont use these watches often dont forget to take the batteries out.
removes the risk of destruction from leakage.
Because mail order actually used to exist. You had to mail in your order with a check and a ‘order form’.
Also fun facts: People used to talk on the phone and the first texting device was only for telling people to call you. 
About ’74 I got to pick out one of those watches as a present. It was $80 (probably like spending $300 or more today). It was pretty slick. But the face scratched rather easily, and after about 3 years it quit working; by then I was ready to go back to a style that I didn’t need to activate with a button to tell the time.
But if they could make one that was more efficient today, so it could stay lit all day (or perhaps any time it sensed motion, at least), I’d consider buying another one.
well, i tried to wear an LED watch.
i kept bumping the side buttons.
so: yes and no.
How accurate were the first LED watches? Did they keep good time? Back in the day I wished I had one.
For at least the last 30 years I would not use anything that wasn't an "atomic" one that syncs up with the clock in Boulder. Also, it needed to have a backlight. That makes me wonder are there any watches with a built in flashlight?
I’ve never seen one, until I open this thread.