Head-to-Head Comparison

Updated September 5, 2026

Tissot Seastar 1000 Automatic vs Tudor Pelagos 42mm M25600TB-0001 (titanium, blue ceramic bezel, blue dial, titanium bracelet)

Two divers compared — $500–$1,000 vs $5,000–$10,000

Quick Verdict

The Tissot Seastar 1000 Automatic ($500–$1,000) offers ETA/Tissot Automatic precision in the tier below the Tudor Pelagos 42mm M25600TB-0001 (titanium, blue ceramic bezel, blue dial, titanium bracelet) ($5,000–$10,000). The Seastar 1000 Automatic measures 40mm and is rated 300m (30 ATM). The Pelagos 42mm M25600TB-0001 (titanium, blue ceramic bezel, blue dial, titanium bracelet) counters with Swiss Made craftsmanship and 500m (50 ATM) water resistance. Both are exceptional divers for their respective tiers.

View the dossier TudorPelagos 42mm M25600TB-0001 (titanium, blue ceramic bezel, blue dial, titanium bracelet)$5,000–$10,000 Check price

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Tissot

Seastar 1000 Automatic

$500–$1,000

View the dossier Full Review

Tudor

Pelagos 42mm M25600TB-0001 (titanium, blue ceramic bezel, blue dial, titanium bracelet)

$5,000–$10,000

Check Price Full Review

Specifications Compared

Feature	Tissot Seastar 1000 Automatic	Tudor Pelagos 42mm M25600TB-0001 (titanium, blue ceramic bezel, blue dial, titanium bracelet)
Price	$500–$1,000	$5,000–$10,000
Case Size	40mm	42mm, 14.3mm thick, 22mm lugs
Movement	Automatic Powermatic 80 (Caliber 80.111)	Tudor manufacture calibre MT5612, automatic, COSC chronometer, bidirectional rotor
Caliber Type	ETA/Tissot Automatic	Tudor manufacture MT5612, COSC
Power Reserve	80 Hours	About 70 hours
Water Resistance	300m (30 ATM)	500m (50 ATM)
Crystal	Sapphire Crystal	Sapphire Crystal
Case Material	Stainless Steel	Titanium with steel caseback, satin finish; unidirectional titanium bezel with matt blue ceramic disc and luminous graduations; helium escape valve at 9; titanium screw-down crown
Origin	Swiss Made	Swiss Made

Category-by-Category Analysis

🎨

Design & Aesthetics

Edge: Draw

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 Pelagos 42mm M25600TB-0001 (titanium, blue ceramic bezel, blue dial, titanium bracelet) offers Titanium with steel caseback, satin finish; unidirectional titanium bezel with matt blue ceramic disc and luminous graduations; helium escape valve at 9; titanium screw-down crown construction at 42mm, 14.3mm thick, 22mm lugs with Sapphire Crystal. Both represent their brand's distinct design philosophy and heritage.

⚙️

Movement & Performance

Edge: Tissot

Automatic Powermatic 80 (Caliber 80.111) vs Tudor manufacture calibre MT5612, automatic, COSC chronometer, bidirectional rotor

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 Pelagos 42mm M25600TB-0001 (titanium, blue ceramic bezel, blue dial, titanium bracelet) uses the Tudor manufacture calibre MT5612, automatic, COSC chronometer, bidirectional rotor (Tudor manufacture MT5612, COSC, About 70 hours reserve) at standard. The Seastar 1000 Automatic edges ahead on power reserve.

📏

Wearability & Fit

Edge: Tissot

40mm vs 42mm, 14.3mm thick, 22mm lugs — different wrist presence

At 40mm, the Seastar 1000 Automatic wears more compactly on smaller wrists compared to the Pelagos 42mm M25600TB-0001 (titanium, blue ceramic bezel, blue dial, titanium bracelet) at 42mm, 14.3mm thick, 22mm lugs. Water resistance differs: 300m (30 ATM) vs 500m (50 ATM).

💰

Value & Cost of Ownership

Edge: Tissot

Tissot sits in the lower tier

The Tissot Seastar 1000 Automatic sits at $500–$1,000 and the Tudor Pelagos 42mm M25600TB-0001 (titanium, blue ceramic bezel, blue dial, titanium bracelet) 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 Pelagos 42mm M25600TB-0001 (titanium, blue ceramic bezel, blue dial, titanium bracelet). Service intervals are typically 5-7 years for both.

💧

Water Resistance

Edge: Tudor

300m (30 ATM) vs 500m (50 ATM)

The Seastar 1000 Automatic is rated to 300m (30 ATM) while the Pelagos 42mm M25600TB-0001 (titanium, blue ceramic bezel, blue dial, titanium bracelet) handles 500m (50 ATM). The Pelagos 42mm M25600TB-0001 (titanium, blue ceramic bezel, blue dial, titanium bracelet) offers superior water resistance.

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 dossier

Tudor

Pelagos 42mm M25600TB-0001 (titanium, blue ceramic bezel, blue dial, titanium bracelet)

Choose the Tudor Pelagos 42mm M25600TB-0001 (titanium, blue ceramic bezel, blue dial, titanium bracelet) if you value Tudor manufacture MT5612, COSC technology, Swiss Made heritage, and 42mm, 14.3mm thick, 22mm lugs proportions. At $5,000–$10,000, the Tudor manufacture calibre MT5612, automatic, COSC chronometer, bidirectional rotor with About 70 hours power reserve makes it a compelling choice.

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The Bottom Line

The Tissot Seastar 1000 Automatic and Tudor Pelagos 42mm M25600TB-0001 (titanium, blue ceramic bezel, blue dial, titanium bracelet) represent two distinct approaches to the diver category — the Tissot bringing Swiss Made tradition while Tudor 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 Tudor Pelagos 42mm M25600TB-0001 (titanium, blue ceramic bezel, blue dial, titanium bracelet) may justify its premium with superior finishing, heritage, or resale value.

Both are suitable for daily wear. The Seastar 1000 Automatic at 40mm with 300m (30 ATM) water resistance handles everyday situations. The Pelagos 42mm M25600TB-0001 (titanium, blue ceramic bezel, blue dial, titanium bracelet) at 42mm, 14.3mm thick, 22mm lugs with 500m (50 ATM) is similarly capable. Both use Sapphire Crystal, which resists scratches well.

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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.