Miyota 8215 & Seiko 7S26 in my personal experience.

 

It would probably be the Grand Seiko quartz modules. Those are sealed at the factory and manufacturer rated to last 50 years without servicing. That's the manufacturer recommendation, though, I'm sure you could realistically expect to not service it for a lifetime without it breaking.

Other than that, an LCD digital watch? You can't really service those, and no moving parts.

 

I've had a Seiko 17 jewel automatic since new for forty years with no servicing and it's still running well. I also have a Timex automatic that I bought new in 1980 and it's still taking a licking and keeps on ticking.

 

If I had to bet on it it would be the Grand Seiko 9F movements, they are sealed so no chance of contamination when the battery is changed and have an expected service life of 50 years.

 

I think it's the luck of the draw and depends on how a person treats and use their watches.

I am sure most workhorse movements will last forever. My coworker has a 11 year old Datejust he never serviced.

But if I were to wage my house on a movement, yeah, probably Seiko.

 

Can I get specific model names in the seiko lines?

What about this one? https://grand-seiko.us.com/collections/SBGA283/

Thanks

 

No, not that one. The 9F movements...the battery-driven quartz. So go up a level from there and select the 9F62 and 9F82 movements.

Man, they're only showing 5.........

There should be quite a few others out there in the channels, that'll have the older labeling.

 

For me that would be my first watch a 1973 Pulsar the only service I've had done is new batteries and a new clasp..
S

 

Wrong photo!

 

The original Tough Solar G-Shock is the Raysman, released in 1998 and still going strong on original battery

Guardian Angels DW-9300GA

Raysman DW-9350 MSJ Middle Sea Race

Galapagos DW-9350DJ titanium

 

I have my Dad's Seiko 6309 from 1984 -- while one of the applied hour indices fell off (since replaced), the movement always worked just fine.

About a year ago, I had it checked/serviced (broke the streak!) when they opened it up anyway, and they've got it working to COSC standards.

 

Definitely the classic seiko dive watches. For example, 6105-800x, 6309-7040. Bulletproof movements.

 

Probably has a few million years to go...

 

Probably has a few million years to go...

View attachment 12370535

Good choice as I think the battery on that one is designed to go for another 6 billion years or so.

Just doesn't cut it as a dress watch though as it's hard to get under a cuff.

Probably not much good as a beater either because the lume is shocking.

 

i have a germinal voiltare watch from the sixties. gold, handwind, been wearing it on and off for ten years with no service and the guy i bought it from told me when he bought it in the eghties it had never yet been serviced and he never seviced it! so i figure about 50 years on and off use with no service. the watch gains about 20 sec a day but it dont bother me! i figure after so long i should rather leave it as it is

 

not that bad, considering you have to wind it daily.. so you get to adjust it also.

 

The Citizen HAQ models
Citizen offers guaranteed parts for the life of the watch plus 10 years warranty with 2 free services.
Citizen beats Grand Seiko in the quartz department.

 

The Grand Seiko 9F movement, as others have pointed out. I won't live another 50 years, so it will run the rest of my life unless I damage it.

 

How's your experience with that model? Does it look flashy? Catch eyes or do you get compliments? Very under the radar? Thanks

 

Usage really has to be factored in to how long a watch can go with no servicing. For example I have a Hamilton 992 pocket watch that will start right up after two turns of the crown. It hasn't been worn since 1945.

 

My 1975 EternaMatic 3003 went 40 years from purchase to service without any subsequent improvement in performance. Having said that it hadn't seen a lot of use. Then my Moze pocket watch probably hadn't been serviced, or indeed run, in over 100 years before it was refurbished last year. It's performance is infinitely improved, from not running at all to keeping time to well within a minute in 24 hours.

 

This is by far the winner!

Sent from my iPhone using Tapatalk Pro

 

Yema with Seiko movement, 20 years and counting...

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Realistically speaking.. A G-Shock never needs servicing.

If you are taking about mechanical, throwaway movements like a NH35A, 4R36 or 6R15C will probably last the longest without servicing; since normally people wouldn't service them.

 

Two Rolexes from pre 2000,a turnograph and 16570 from 1995...and another Rolex air king precision I bough back in 2005/2006...

All three are still within Rolex's standard of timekeeping (-2/+2 on 6 positions) when placed on timegrapher....

 

My Dad's mechanical Omega is about 75 yo or so. It still runs well when I wind it. I know I know, I need to get it cleaned and lubed. It is on my things to do list.

 

How is the Omega running have you serviced it yet?

 

Not mechanical but I have an old Timex tv watch that was my grandfathers ( yes I found it in a drawer, how did you know? ). I’m guessing it was from the 60’s or 70’s. I popped a new battery in it and it works fine.

 

I’ve got a ladies dress was watch from the 1920’s that still holds a up. Never been opened and on the original leather and steel band.
Only name on it is GENEVA.

 

This watch was given to my brother in law for his birthday in 1969.
Never really been off his wrist, and he was a very active tennis player for 20 years, and a drummer for over 50 years. So this auto 7625 movement has been flogged relentlessly its entire life. Yes it’s only 53 years old, but it’s duty cycle was probably 100 times worse than a normal watch I’m thinking.
He gave it to me a few weeks ago to get serviced as it has started to lose time!
All printing inside is gone, I’d say from sweat or moisture. Check out the dial in the parts tray, the watchmaker says definitely sweat.
However, the pic of the movement is what it looked like the very first time it was opened.
Just goes to show the quality of material and plating in these early Seiko’s.

 

This watch was given to my brother in law for his birthday in 1969.
Never really been off his wrist, and he was a very active tennis player for 20 years, and a drummer for over 50 years. So this auto 7625 movement has been flogged relentlessly its entire life. Yes it’s only 53 years old, but it’s duty cycle was probably 100 times worse than a normal watch I’m thinking.
He gave it to me a few weeks ago to get serviced as it has started to lose time!
All printing inside is gone, I’d say from sweat or moisture. Check out the dial in the parts tray, the watchmaker says definitely sweat.
However, the pic of the movement is what it looked like the very first time it was opened.
Just goes to show the quality of material and plating in these early Seiko’s. View attachment 16817196
View attachment 16817197
View attachment 16817199
View attachment 16817198

Wow that is a fantastic story and still looking ok.