Updated
Omega Seamaster Diver 300M Co-Axial 41mm (steel, black dial, ceramic bezel, bracelet) vs Tissot Seastar 1000 Automatic
Two divers compared — $5,000–$10,000 vs $500–$1,000
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 41mm (steel, black dial, ceramic bezel, bracelet) ($5,000–$10,000). The Seastar 1000 Automatic measures 40mm and is rated 300m (30 ATM). The Seamaster Diver 300M Co-Axial 41mm (steel, black dial, ceramic bezel, bracelet) justifies its premium with Swiss Made heritage and Automatic, Omega Co-Axial calibre 2500 (per the reference family the photograph matches; ask to confirm). Both represent excellent choices in the diver category.
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Omega
Seamaster Diver 300M Co-Axial 41mm (steel, black dial, ceramic bezel, bracelet)
$5,000–$10,000
Specifications Compared
| Feature | Omega Seamaster Diver 300M Co-Axial 41mm (steel, black dial, ceramic bezel, bracelet) | Tissot Seastar 1000 Automatic |
|---|---|---|
| Price | $5,000–$10,000 | $500–$1,000 |
| Case Size | 41mm, 13mm thick | 40mm |
| Movement | Automatic, Omega Co-Axial calibre 2500 (per the reference family the photograph matches; ask to confirm) | Automatic Powermatic 80 (Caliber 80.111) |
| Caliber Type | Omega Co-Axial 2500, chronometer | ETA/Tissot Automatic |
| Power Reserve | About 48 hours | 80 Hours |
| Water Resistance | 300m (30 ATM) | 300m (30 ATM) |
| Crystal | Sapphire Crystal | Sapphire Crystal |
| Case Material | Stainless steel, unidirectional ceramic bezel, helium escape valve | Stainless Steel |
| Origin | Swiss Made | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Omega's design language vs Tissot's approach
The Omega Seamaster Diver 300M Co-Axial 41mm (steel, black dial, ceramic bezel, bracelet) features a Stainless steel, unidirectional ceramic bezel, helium escape valve case at 41mm, 13mm thick with Sapphire Crystal 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
Automatic, Omega Co-Axial calibre 2500 (per the reference family the photograph matches; ask to confirm) vs Automatic Powermatic 80 (Caliber 80.111)
The Seamaster Diver 300M Co-Axial 41mm (steel, black dial, ceramic bezel, bracelet) runs the Automatic, Omega Co-Axial calibre 2500 (per the reference family the photograph matches; ask to confirm) (Omega Co-Axial 2500, chronometer, About 48 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
41mm, 13mm thick vs 40mm — different wrist presence
At 41mm, 13mm thick, the Seamaster Diver 300M Co-Axial 41mm (steel, black dial, ceramic bezel, bracelet) has a bolder wrist presence compared to the Seastar 1000 Automatic at 40mm. Water resistance differs: 300m (30 ATM) vs 300m (30 ATM).
Value & Cost of Ownership
Tissot sits in the lower tier
The Omega Seamaster Diver 300M Co-Axial 41mm (steel, black dial, ceramic bezel, bracelet) 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 41mm (steel, black dial, ceramic bezel, bracelet) uses Sapphire Crystal with About 48 hours, against Sapphire Crystal and 80 Hours on the Seastar 1000 Automatic. Service intervals are typically 5-7 years for both.
Water Resistance
300m (30 ATM) vs 300m (30 ATM)
The Seamaster Diver 300M Co-Axial 41mm (steel, black dial, ceramic bezel, bracelet) is rated to 300m (30 ATM) while the Seastar 1000 Automatic handles 300m (30 ATM). Both offer identical water resistance ratings.
Our Verdict
Omega
Seamaster Diver 300M Co-Axial 41mm (steel, black dial, ceramic bezel, bracelet)
Choose the Omega Seamaster Diver 300M Co-Axial 41mm (steel, black dial, ceramic bezel, bracelet) if you prioritize Omega Co-Axial 2500, chronometer engineering, Swiss Made craftsmanship, and 300m (30 ATM) water resistance. At $5,000–$10,000, it delivers Automatic, Omega Co-Axial calibre 2500 (per the reference family the photograph matches; ask to confirm) with About 48 hours power reserve.
Check Price on AmazonTissot
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.
View the dossierThe Bottom Line
The Omega Seamaster Diver 300M Co-Axial 41mm (steel, black dial, ceramic bezel, bracelet) and Tissot Seastar 1000 Automatic represent two distinct approaches to the diver category — the Omega bringing Swiss Made tradition while Tissot delivers Swiss Made engineering.
Frequently Asked Questions
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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.