Constellation

Omega Constellation 131.20.29.20.55.001

Constellation Co-Axial Master Chronometer

29mm
Two-tone
Caliber 8700
2020 to present
Women's

The Omega Constellation, reference 131.20.29.20.55.001. Produced 2020 to present. Below are the full specifications, plus what each part of the reference number means. If you own this reference and want to know what it is worth today, we buy it outright and appraisals are complimentary.

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GIA-trained appraisers · 20 years in downtown San Diego · 100% certified authentic

Full specifications

Case

Case size	29mm
Case material	Two-tone
Crystal	Sapphire

Bezel

Bezel type	Fixed

Band

Bracelet type	Integrated bracelet
Bracelet	Integrated two-tone (steel and gold) bracelet
Clasp	Folding deployant

Movement

Movement	Caliber 8700
Caliber	8700
Power reserve	50 hours
Beat rate	25200 vph
Functions	Hours, minutes, seconds, date

Reference

Wears as	Women's
Produced	2020 to present

How the 131.20.29.20.55.001 compares

Side by side with the other Omega Constellation references we document. Only the specs that actually differ are listed.

131.20.29.20.55.001 vs 123.10.35.20.02.001

Spec	131.20.29.20.55.001	123.10.35.20.02.001
Case size	29mm	35mm
Power reserve	50 hrs	60 hrs
Produced	2020 to present	2009 to 2020

131.20.29.20.55.001 vs 123.10.38.21.02.001

Spec	131.20.29.20.55.001	123.10.38.21.02.001
Case size	29mm	38mm
Power reserve	50 hrs	60 hrs
Produced	2020 to present	2009 to 2020

131.20.29.20.55.001 vs 131.10.39.20.13.001

Spec	131.20.29.20.55.001	131.10.39.20.13.001
Case size	29mm	39mm
Power reserve	50 hrs	60 hrs

More Omega Constellation references

Constellation

123.10.35.20.02.001

Constellation

123.10.38.21.02.001

Constellation

131.10.39.20.13.001

Constellation

131.10.41.20.13.001

See all Omega Constellation references ›

Common questions about the Omega Constellation 131.20.29.20.55.001

How big is the Omega Constellation 131.20.29.20.55.001?

The case measures 29mm across. Case material: Two-tone. Case size alone is a poor guide to how a watch wears; lug-to-lug length and how the bracelet drops off the case matter more, which is why we suggest trying one on before you commit.

What movement is in the 131.20.29.20.55.001?

Caliber 8700. Power reserve is 50 hours. It beats at 25,200 vph.

When was the Omega Constellation 131.20.29.20.55.001 made?

Omega produced this reference from 2020 to the present day. Production years matter when you are valuing one, because dial, bezel and bracelet details often changed inside a single reference run.

Does the 131.20.29.20.55.001 have a nickname?

Constellation Co-Axial Master Chronometer. Collector nicknames are not official Omega names, but they are what people actually search for and what they are called across a showroom.

Does San Diego Jewelry Buyers buy the Omega Constellation 131.20.29.20.55.001?

Yes. We buy this reference outright, and we lend against it if you would rather keep it. We are a family-owned San Diego buyer established in 2006, our appraisers are GIA-trained, and the appraisal is complimentary with no obligation to sell. You can bring it to our Gaslamp showroom at 907 Sixth Ave or start online. If you are looking to buy this reference instead, tell us and we will let you know when one comes in.

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BBB A+ accredited
Family-owned in San Diego since 2006
Paid on the spot, in person

Interested in a Constellation 131.20.29.20.55.001?

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Own a Constellation 131.20.29.20.55.001?

We buy this reference outright, and we lend against it. Bring it to our Gaslamp showroom or start online. Appraisals are complimentary and there is no obligation to sell.

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