Updated
Tissot Seastar 1000 Automatic vs Tudor Black Bay Ceramic M79210CNU-0001 (black ceramic, black dial, hybrid strap)
Tissot's diver meets Tudor's chronograph
Quick Verdict
The Tissot Seastar 1000 Automatic ($500–$1,000) offers ETA/Tissot Automatic precision in the tier below the Tudor Black Bay Ceramic M79210CNU-0001 (black ceramic, black dial, hybrid strap) ($5,000–$10,000). The Seastar 1000 Automatic measures 40mm and is rated 300m (30 ATM). The Black Bay Ceramic M79210CNU-0001 (black ceramic, black dial, hybrid strap) counters with Swiss Made craftsmanship and 200m (20 ATM) water resistance. Both are exceptional watches for their respective tiers.
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Tudor
Black Bay Ceramic M79210CNU-0001 (black ceramic, black dial, hybrid strap)
$5,000–$10,000
Specifications Compared
| Feature | Tissot Seastar 1000 Automatic | Tudor Black Bay Ceramic M79210CNU-0001 (black ceramic, black dial, hybrid strap) |
|---|---|---|
| Price | $500–$1,000 | $5,000–$10,000 |
| Case Size | 40mm | 41mm |
| Movement | Automatic Powermatic 80 (Caliber 80.111) | Automatic, Tudor manufacture calibre MT5602-1U, Master Chronometer (METAS) |
| Caliber Type | ETA/Tissot Automatic | MT5602-1U, Master Chronometer |
| Power Reserve | 80 Hours | About 70 hours |
| Water Resistance | 300m (30 ATM) | 200m (20 ATM) |
| Crystal | Sapphire Crystal | Sapphire Crystal |
| Case Material | Stainless Steel | Black ceramic, unidirectional bezel with black ceramic insert, steel caseback with sapphire window |
| Origin | Swiss Made | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Tissot's design language vs Tudor's approach
The Tissot Seastar 1000 Automatic features a Stainless Steel case at 40mm with Sapphire Crystal protection. The Tudor Black Bay Ceramic M79210CNU-0001 (black ceramic, black dial, hybrid strap) offers Black ceramic, unidirectional bezel with black ceramic insert, steel caseback with sapphire window construction at 41mm with Sapphire Crystal. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic Powermatic 80 (Caliber 80.111) vs Automatic, Tudor manufacture calibre MT5602-1U, Master Chronometer (METAS)
The Seastar 1000 Automatic runs the Automatic Powermatic 80 (Caliber 80.111) (ETA/Tissot Automatic, 80 Hours power reserve) at 21,600 vph (3 Hz) frequency. The Black Bay Ceramic M79210CNU-0001 (black ceramic, black dial, hybrid strap) uses the Automatic, Tudor manufacture calibre MT5602-1U, Master Chronometer (METAS) (MT5602-1U, Master Chronometer, About 70 hours reserve) at standard. The Seastar 1000 Automatic edges ahead on power reserve.
Wearability & Fit
40mm vs 41mm — different wrist presence
At 40mm, the Seastar 1000 Automatic wears more compactly on smaller wrists compared to the Black Bay Ceramic M79210CNU-0001 (black ceramic, black dial, hybrid strap) at 41mm. Water resistance differs: 300m (30 ATM) vs 200m (20 ATM).
Value & Cost of Ownership
Tissot sits in the lower tier
The Tissot Seastar 1000 Automatic sits at $500–$1,000 and the Tudor Black Bay Ceramic M79210CNU-0001 (black ceramic, black dial, hybrid strap) at $5,000–$10,000. On the specs that outlast any price: the Seastar 1000 Automatic uses Sapphire Crystal with 80 Hours, against Sapphire Crystal and About 70 hours on the Black Bay Ceramic M79210CNU-0001 (black ceramic, black dial, hybrid strap). Service intervals are typically 5-7 years for both.
Water Resistance
300m (30 ATM) vs 200m (20 ATM)
The Seastar 1000 Automatic is rated to 300m (30 ATM) while the Black Bay Ceramic M79210CNU-0001 (black ceramic, black dial, hybrid strap) handles 200m (20 ATM). The Seastar 1000 Automatic is better suited for water activities.
Our Verdict
Tissot
Seastar 1000 Automatic
Choose the Tissot Seastar 1000 Automatic if you prioritize ETA/Tissot Automatic engineering, Swiss Made craftsmanship, and 300m (30 ATM) water resistance. At $500–$1,000, it delivers Automatic Powermatic 80 (Caliber 80.111) with 80 Hours power reserve.
View the dossierTudor
Black Bay Ceramic M79210CNU-0001 (black ceramic, black dial, hybrid strap)
Choose the Tudor Black Bay Ceramic M79210CNU-0001 (black ceramic, black dial, hybrid strap) if you value MT5602-1U, Master Chronometer technology, Swiss Made heritage, and 41mm proportions. At $5,000–$10,000, the Automatic, Tudor manufacture calibre MT5602-1U, Master Chronometer (METAS) with About 70 hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Tissot Seastar 1000 Automatic and Tudor Black Bay Ceramic M79210CNU-0001 (black ceramic, black dial, hybrid strap) represent two distinct approaches to fine watchmaking — the Tissot bringing Swiss Made tradition while Tudor 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.