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Omega Seamaster Planet Ocean 600M 43.5mm (Sedna gold, blue ceramic) 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 Planet Ocean 600M 43.5mm (Sedna gold, blue ceramic) ($25,000+). The Seastar 1000 Automatic measures 40mm and is rated 300m (30 ATM). The Seamaster Planet Ocean 600M 43.5mm (Sedna gold, blue ceramic) justifies its premium with Swiss Made heritage and Automatic, Omega Co-Axial Master Chronometer Calibre 8901. Both represent excellent choices in the luxury watch category.
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Specifications Compared
| Feature | Omega Seamaster Planet Ocean 600M 43.5mm (Sedna gold, blue ceramic) | Tissot Seastar 1000 Automatic |
|---|---|---|
| Price | $25,000+ | $500–$1,000 |
| Case Size | 43.5mm | 40mm |
| Movement | Automatic, Omega Co-Axial Master Chronometer Calibre 8901 | Automatic Powermatic 80 (Caliber 80.111) |
| Caliber Type | Omega 8901, METAS Master Chronometer, anti-magnetic to 15,000 gauss | ETA/Tissot Automatic |
| Power Reserve | About 60 hours | 80 Hours |
| Water Resistance | 600m (60 ATM), helium escape valve | 300m (30 ATM) |
| Crystal | Sapphire Crystal, sapphire caseback | Sapphire Crystal |
| Case Material | 18k Sedna gold | Stainless Steel |
| Origin | Swiss Made | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Omega's design language vs Tissot's approach
The Omega Seamaster Planet Ocean 600M 43.5mm (Sedna gold, blue ceramic) features a 18k Sedna gold case at 43.5mm with Sapphire Crystal, sapphire caseback 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 Master Chronometer Calibre 8901 vs Automatic Powermatic 80 (Caliber 80.111)
The Seamaster Planet Ocean 600M 43.5mm (Sedna gold, blue ceramic) runs the Automatic, Omega Co-Axial Master Chronometer Calibre 8901 (Omega 8901, METAS Master Chronometer, anti-magnetic to 15,000 gauss, About 60 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
43.5mm vs 40mm — different wrist presence
At 43.5mm, the Seamaster Planet Ocean 600M 43.5mm (Sedna gold, blue ceramic) has a bolder wrist presence compared to the Seastar 1000 Automatic at 40mm. Water resistance differs: 600m (60 ATM), helium escape valve vs 300m (30 ATM).
Value & Cost of Ownership
Tissot sits in the lower tier
The Omega Seamaster Planet Ocean 600M 43.5mm (Sedna gold, blue ceramic) sits at $25,000+ and the Tissot Seastar 1000 Automatic at $500–$1,000. On the specs that outlast any price: the Seamaster Planet Ocean 600M 43.5mm (Sedna gold, blue ceramic) uses Sapphire Crystal, sapphire caseback with About 60 hours, against Sapphire Crystal and 80 Hours on the Seastar 1000 Automatic. Service intervals are typically 5-7 years for both.
Water Resistance
600m (60 ATM), helium escape valve vs 300m (30 ATM)
The Seamaster Planet Ocean 600M 43.5mm (Sedna gold, blue ceramic) is rated to 600m (60 ATM), helium escape valve while the Seastar 1000 Automatic handles 300m (30 ATM). The Seamaster Planet Ocean 600M 43.5mm (Sedna gold, blue ceramic) is better suited for water activities.
Our Verdict
Omega
Seamaster Planet Ocean 600M 43.5mm (Sedna gold, blue ceramic)
Choose the Omega Seamaster Planet Ocean 600M 43.5mm (Sedna gold, blue ceramic) if you prioritize Omega 8901, METAS Master Chronometer, anti-magnetic to 15,000 gauss engineering, Swiss Made craftsmanship, and 600m (60 ATM), helium escape valve water resistance. At $25,000+, it delivers Automatic, Omega Co-Axial Master Chronometer Calibre 8901 with About 60 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 Planet Ocean 600M 43.5mm (Sedna gold, blue ceramic) 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
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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.