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Omega Seamaster Diver 300M Co-Axial Master Chronometer 42mm 210.22.42.20.03.001 (steel and yellow gold, blue ceramic dial, blue rubber strap) vs Tissot Seastar 1000 Automatic

Omega's chronograph meets Tissot's diver

Quick Verdict

The Tissot Seastar 1000 Automatic ($500–$1,000) delivers ETA/Tissot Automatic technology in the tier below the Omega Seamaster Diver 300M Co-Axial Master Chronometer 42mm 210.22.42.20.03.001 (steel and yellow gold, blue ceramic dial, blue rubber strap) ($5,000–$10,000). The Seastar 1000 Automatic measures 40mm and is rated 300m (30 ATM). The Seamaster Diver 300M Co-Axial Master Chronometer 42mm 210.22.42.20.03.001 (steel and yellow gold, blue ceramic dial, blue rubber strap) justifies its premium with Swiss Made heritage and Omega Co-Axial Master Chronometer calibre 8800, automatic, METAS certified. Both represent excellent choices in the luxury watch category.

OmegaSeamaster Diver 300M Co-Axial Master Chronometer 42mm 210.22.42.20.03.001 (steel and yellow gold, blue ceramic dial, blue rubber strap)$5,000–$10,000 Check price View the dossier

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Omega Seamaster Diver 300M Co-Axial Master Chronometer 42mm 210.22.42.20.03.001 (steel and yellow gold, blue ceramic dial, blue rubber strap)

Omega

Seamaster Diver 300M Co-Axial Master Chronometer 42mm 210.22.42.20.03.001 (steel and yellow gold, blue ceramic dial, blue rubber strap)

$5,000–$10,000

Check Price Full Review
Tissot Seastar 1000 Automatic

Tissot

Seastar 1000 Automatic

$500–$1,000

View the dossierFull Review

Specifications Compared

FeatureOmega Seamaster Diver 300M Co-Axial Master Chronometer 42mm 210.22.42.20.03.001 (steel and yellow gold, blue ceramic dial, blue rubber strap)Tissot Seastar 1000 Automatic
Price$5,000–$10,000$500–$1,000
Case Size42mm, 13.56mm thick, 49.9mm lug to lug, 20mm lugs40mm
MovementOmega Co-Axial Master Chronometer calibre 8800, automatic, METAS certifiedAutomatic Powermatic 80 (Caliber 80.111)
Caliber TypeOmega 8800, Master ChronometerETA/Tissot Automatic
Power ReserveAbout 55 hours80 Hours
Water Resistance300m (30 bar)300m (30 ATM)
CrystalDomed sapphire, anti-reflective both sidesSapphire Crystal
Case MaterialStainless steel with 18k yellow gold bezel ring and crown, unidirectional blue ceramic bezel with Ceragold diving scale, conical helium escape valve, screw-in crown, sapphire casebackStainless Steel
OriginSwiss MadeSwiss Made

Category-by-Category Analysis

🎨

Design & Aesthetics

Edge: Draw

Omega's design language vs Tissot's approach

The Omega Seamaster Diver 300M Co-Axial Master Chronometer 42mm 210.22.42.20.03.001 (steel and yellow gold, blue ceramic dial, blue rubber strap) features a Stainless steel with 18k yellow gold bezel ring and crown, unidirectional blue ceramic bezel with Ceragold diving scale, conical helium escape valve, screw-in crown, sapphire caseback case at 42mm, 13.56mm thick, 49.9mm lug to lug, 20mm lugs with Domed sapphire, anti-reflective both sides protection. The Tissot Seastar 1000 Automatic offers Stainless Steel construction at 40mm with Sapphire Crystal. Both represent their brand's distinct design philosophy and heritage.

⚙️

Movement & Performance

Edge: Tissot

Omega Co-Axial Master Chronometer calibre 8800, automatic, METAS certified vs Automatic Powermatic 80 (Caliber 80.111)

The Seamaster Diver 300M Co-Axial Master Chronometer 42mm 210.22.42.20.03.001 (steel and yellow gold, blue ceramic dial, blue rubber strap) runs the Omega Co-Axial Master Chronometer calibre 8800, automatic, METAS certified (Omega 8800, Master Chronometer, About 55 hours power reserve) at standard frequency. The Seastar 1000 Automatic uses the Automatic Powermatic 80 (Caliber 80.111) (ETA/Tissot Automatic, 80 Hours reserve) at 21,600 vph (3 Hz). The Seastar 1000 Automatic offers a longer power reserve.

📏

Wearability & Fit

Edge: Tissot

42mm, 13.56mm thick, 49.9mm lug to lug, 20mm lugs vs 40mm — different wrist presence

At 42mm, 13.56mm thick, 49.9mm lug to lug, 20mm lugs, the Seamaster Diver 300M Co-Axial Master Chronometer 42mm 210.22.42.20.03.001 (steel and yellow gold, blue ceramic dial, blue rubber strap) has a bolder wrist presence compared to the Seastar 1000 Automatic at 40mm. Water resistance differs: 300m (30 bar) vs 300m (30 ATM).

💰

Value & Cost of Ownership

Edge: Tissot

Tissot sits in the lower tier

The Omega Seamaster Diver 300M Co-Axial Master Chronometer 42mm 210.22.42.20.03.001 (steel and yellow gold, blue ceramic dial, blue rubber strap) sits at $5,000–$10,000 and the Tissot Seastar 1000 Automatic at $500–$1,000. On the specs that outlast any price: the Seamaster Diver 300M Co-Axial Master Chronometer 42mm 210.22.42.20.03.001 (steel and yellow gold, blue ceramic dial, blue rubber strap) uses Domed sapphire, anti-reflective both sides with About 55 hours, against Sapphire Crystal and 80 Hours on the Seastar 1000 Automatic. Service intervals are typically 5-7 years for both.

💧

Water Resistance

Edge: Draw

300m (30 bar) vs 300m (30 ATM)

The Seamaster Diver 300M Co-Axial Master Chronometer 42mm 210.22.42.20.03.001 (steel and yellow gold, blue ceramic dial, blue rubber strap) is rated to 300m (30 bar) while the Seastar 1000 Automatic handles 300m (30 ATM). Both offer identical water resistance ratings.

Our Verdict

Omega

Seamaster Diver 300M Co-Axial Master Chronometer 42mm 210.22.42.20.03.001 (steel and yellow gold, blue ceramic dial, blue rubber strap)

Choose the Omega Seamaster Diver 300M Co-Axial Master Chronometer 42mm 210.22.42.20.03.001 (steel and yellow gold, blue ceramic dial, blue rubber strap) if you prioritize Omega 8800, Master Chronometer engineering, Swiss Made craftsmanship, and 300m (30 bar) water resistance. At $5,000–$10,000, it delivers Omega Co-Axial Master Chronometer calibre 8800, automatic, METAS certified with About 55 hours power reserve.

Check Price on Amazon

Tissot

Seastar 1000 Automatic

Choose the Tissot Seastar 1000 Automatic if you value ETA/Tissot Automatic technology, Swiss Made heritage, and 40mm proportions. At $500–$1,000, the Automatic Powermatic 80 (Caliber 80.111) with 80 Hours power reserve makes it a compelling choice.

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The Bottom Line

The Omega Seamaster Diver 300M Co-Axial Master Chronometer 42mm 210.22.42.20.03.001 (steel and yellow gold, blue ceramic dial, blue rubber strap) and Tissot Seastar 1000 Automatic represent two distinct approaches to fine watchmaking — the Omega bringing Swiss Made tradition while Tissot delivers Swiss Made engineering.

Frequently Asked Questions

On price, the Tissot Seastar 1000 Automatic sits a band lower ($500–$1,000 against $5,000–$10,000), so it is the cheaper way into the category. Neither is better at everything; the spec table above shows movement, case size, water resistance and crystal side by side so you can weigh what matters to you. We do not test units, so this is the makers' data, not a bench result.
The Tissot Seastar 1000 Automatic offers better upfront value, sitting a tier lower at $500–$1,000. However, the Omega Seamaster Diver 300M Co-Axial Master Chronometer 42mm 210.22.42.20.03.001 (steel and yellow gold, blue ceramic dial, blue rubber strap) may justify its premium with superior finishing, heritage, or resale value.
Both are suitable for daily wear. The Seamaster Diver 300M Co-Axial Master Chronometer 42mm 210.22.42.20.03.001 (steel and yellow gold, blue ceramic dial, blue rubber strap) at 42mm, 13.56mm thick, 49.9mm lug to lug, 20mm lugs with 300m (30 bar) water resistance handles everyday situations. The Seastar 1000 Automatic at 40mm with 300m (30 ATM) is similarly capable. The Seamaster Diver 300M Co-Axial Master Chronometer 42mm 210.22.42.20.03.001 (steel and yellow gold, blue ceramic dial, blue rubber strap) uses Domed sapphire, anti-reflective both sides while the Seastar 1000 Automatic uses Sapphire Crystal.

More Comparisons

Tag Heuer Carrera Chronograph vs Omega Seamaster Diver 300M Co-Axial Master Chronometer 42mm 210.22.42.20.03.001 (steel and yellow gold, blue ceramic dial, blue rubber strap)

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Tag Heuer Carrera Chronograph vs Tissot Seastar 1000 Automatic

Tag Heuer's chronograph meets Tissot's diver

Tissot PRX Powermatic 80 vs Omega Seamaster Diver 300M Co-Axial Master Chronometer 42mm 210.22.42.20.03.001 (steel and yellow gold, blue ceramic dial, blue rubber strap)

Tissot's timepiece meets Omega's chronograph

Explore These Watches

Omega Seamaster Diver 300M Co-Axial Master Chronometer 42mm 210.22.42.20.03.001 (steel and yellow gold, blue ceramic dial, blue rubber strap) — Full ReviewTissot Seastar 1000 Automatic — Full ReviewBrowse All Guides

How This Page Was Made

Our comparisons are generated from a hand-maintained specification database and reviewed under our editorial standards. We use AI tools to assemble pages from that data. We don’t invent specs: every number traces back to the database, and when we correct an entry, the fix is applied site-wide. As an Amazon Associate, The Horologist earns from qualifying purchases.