Automatic winding teste (1120 movement)

Joao_BRA · 2026-04-24T05:16:21-0500

Hi all,

I recently (Dec 2025) had a Calibre 1120 watch serviced at an authorized Omega service center. The manual winding is excellent (48 hours, well above the minimum 44 hours), but the automatic winding seems poor (I often use it for almost 8 hours and it doesn't last all night without stopping).

Question for the experts: What is the best way to test the automatic winding before sending it again to Omega? I will buy a watch winder for testing.

Thanks!

YY77 · 2026-04-24T05:28:33-0500

I would say manually top it off, wear it on an active day and leave it at home to check when it stops.

Annapolis · 2026-04-24T05:33:00-0500

I usually give my watches a full manual wind and then wear them for weeks without having to manually wind them again. If I can do that, then I trust the auto winding is working well. It’s unlikely that you’ll be able to achieve a full charge from zero just by putting the watch on and wearing it normally unless you’re very active.

To test it, I guess you get a winder and simulate this? Give it a full charge then let it sit on the winder for a couple days (well past the duration of its stated power reserve), then remove it from the winder, start your timer and let it sit still and see how long it continues to run. If it’s significantly less than the stated power reserve, you’ve got an issue.

padders · 2026-04-24T07:25:16-0500

Joao_BRA
Hi all,

I recently (Dec 2025) had a Calibre 1120 watch serviced at an authorized Omega service center. The manual winding is excellent (48 hours, well above the minimum 44 hours), but the automatic winding seems poor (I often use it for almost 8 hours and it doesn't last all night without stopping).

Question for the experts: What is the best way to test the automatic winding before sending it again to Omega? I will buy a watch winder for testing.

Thanks!

That doesn't sound right. If the reserve is 48 hours then there is definitely a problem with the auto winding. Most of the above suggestions will simply test the reserve again which you know is sufficient so don't waste your time.

From memory, and I may be slapped down by a watchmaker for saying this, but I recall the rotor reverser wheels and rotor bearing are weak spots on the 1120 (and parent ETA 2892-A2). I would send that back under warranty. If you are wearing it for 8 hours and even moderately active, it should run indefinitely.

Joao_BRA · 2026-04-24T07:33:06-0500

padders
That doesn't sound right. If the reserve is 48 hours then there is definitely a problem with the auto winding. Most of the above suggestions will simply test the reserve again which you know is sufficient so don't waste your time.

From memory, and I am bound to be slapped down by a watchmaker for saying this, but I recall the rotor reverser wheels and rotor bearing are weak spots on the 1120 (and parent ETA 2892-A2). I would send that back under warranty. If you are wearing it for 8 hours and even moderately active, it should run indefinitely.

I'm running a test right now: I started the watch with my arm moving (the watch was stopped). I'll use it for 8 hours (most active routine) and then count how many hours the automatic charging lasts. What do you think of the test? Thanks.

padders · 2026-04-24T07:33:06-0500

As a data point. I have a desk job and drive to work so am not exactly rushing about. My Seamaster 2254 (with 1120 movement) hasn't needed winding since I put it on about 2 weeks ago and I take it off when at home where I don't really care about the time of day.

Just send it back, it is clearly not working well.

Joao_BRA · 2026-04-24T07:50:46-0500

padders
As a data point. I have a desk job and drive to work so am not exactly rushing about. My Seamaster 2254 (with 1120 movement) hasn't needed winding since I put it on about 2 weeks ago and I take it off when at home where I don't really care about the time of day.

Just send it back, it is clearly not working well.

After my test, I will post the results here and problably I will send it back. Thanks again.

dsio · 2026-04-24T07:52:49-0500

padders
As a data point. I have a desk job and drive to work so am not exactly rushing about. My Seamaster 2254 (with 1120 movement) hasn't needed winding since I put it on about 2 weeks ago and I take it off when at home where I don't really care about the time of day.

Just send it back, it is clearly not working well.

The only time I’ve seen someone with a working 1120 not able to keep it running well was a family friend with motor neuron disease that was hardly moving. It’s an efficiently winding system if correctly serviced and won’t have an issue staying running.

tjs1295 · 2026-04-24T07:55:13-0500

I always give my watches a full wind when I start wearing them after they stop running. Why wouldn't you?

Joao_BRA · 2026-04-24T08:01:54-0500

T tjs1295
Sempre dou corda completa nos meus relógios quando começo a usá-los depois que param de funcionar. Por que você não faria o mesmo?

It just for test. Maybe it is not the best way to test the automatic module.

YY77 · 2026-04-24T08:04:39-0500

T tjs1295
I always give my watches a full wind when I start wearing them after they stop running. Why wouldn't you?

Correct, it even says so in the manual:

Joao_BRA · 2026-04-24T08:07:45-0500

YY77
Correct, it even says so in the manual:

Correct. I knew this information. Dou you have any idea for test of automatic system. Thanks!

Automatic winding teste (1120 movement)

Joao_BRA

YY77

Annapolis

padders

Joao_BRA

padders

Joao_BRA

dsio

tjs1295

Joao_BRA

YY77

Joao_BRA

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