Head-to-Head Comparison

Updated September 5, 2026

Junghans Form A Automatic vs Tissot Seastar 1000 Automatic

Junghans's dress watch meets Tissot's diver

Quick Verdict

The Tissot Seastar 1000 Automatic ($500–$1,000) delivers ETA/Tissot Automatic technology in the tier below the Junghans Form A Automatic ($1,000–$1,500). The Seastar 1000 Automatic measures 40mm and is rated 300m (30 ATM). The Form A Automatic justifies its premium with Made in Germany heritage and Automatic J800.2 (ETA 2824-2). Both represent excellent choices in the luxury watch category.

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Junghans

Form A Automatic

$1,000–$1,500

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Tissot

Seastar 1000 Automatic

$500–$1,000

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Specifications Compared

Feature	Junghans Form A Automatic	Tissot Seastar 1000 Automatic
Price	$1,000–$1,500	$500–$1,000
Case Size	39.3mm	40mm
Movement	Automatic J800.2 (ETA 2824-2)	Automatic Powermatic 80 (Caliber 80.111)
Caliber Type	Swiss ETA Base, German-Finished	ETA/Tissot Automatic
Power Reserve	38 Hours	80 Hours
Water Resistance	50m (5 ATM)	300m (30 ATM)
Crystal	Flat Sapphire with Anti-Reflective Coating	Sapphire Crystal
Case Material	Stainless Steel	Stainless Steel
Origin	Made in Germany	Swiss Made

Category-by-Category Analysis

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Design & Aesthetics

Edge: Draw

Junghans's design language vs Tissot's approach

The Junghans Form A Automatic features a Stainless Steel case at 39.3mm with Flat Sapphire with Anti-Reflective Coating 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.

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Movement & Performance

Edge: Tissot

Automatic J800.2 (ETA 2824-2) vs Automatic Powermatic 80 (Caliber 80.111)

The Form A Automatic runs the Automatic J800.2 (ETA 2824-2) (Swiss ETA Base, German-Finished, 38 Hours power reserve) at 28,800 vph (4 Hz) 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.

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Wearability & Fit

Edge: Junghans

39.3mm vs 40mm — different wrist presence

At 39.3mm, the Form A Automatic wears more compactly on smaller wrists compared to the Seastar 1000 Automatic at 40mm. Water resistance differs: 50m (5 ATM) vs 300m (30 ATM).

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Value & Cost of Ownership

Edge: Tissot

Tissot sits in the lower tier

The Junghans Form A Automatic sits at $1,000–$1,500 and the Tissot Seastar 1000 Automatic at $500–$1,000. On the specs that outlast any price: the Form A Automatic uses Flat Sapphire with Anti-Reflective Coating with 38 Hours, against Sapphire Crystal and 80 Hours on the Seastar 1000 Automatic. Service intervals are typically 5-7 years for both.

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Water Resistance

Edge: Tissot

50m (5 ATM) vs 300m (30 ATM)

The Form A Automatic is rated to 50m (5 ATM) while the Seastar 1000 Automatic handles 300m (30 ATM). The Seastar 1000 Automatic offers superior water resistance.

Our Verdict

Junghans

Form A Automatic

Choose the Junghans Form A Automatic if you prioritize Swiss ETA Base, German-Finished engineering, Made in Germany craftsmanship, and 50m (5 ATM) water resistance. At $1,000–$1,500, it delivers Automatic J800.2 (ETA 2824-2) with 38 Hours power reserve.

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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 Junghans Form A Automatic and Tissot Seastar 1000 Automatic represent two distinct approaches to fine watchmaking — the Junghans bringing Made in Germany tradition while Tissot delivers Swiss Made engineering.

Frequently Asked Questions

For water, the Tissot Seastar 1000 Automatic is rated 300 m against 50 m, which is the difference between swimming and diving on one side and splashes on the other. On price, the Tissot Seastar 1000 Automatic sits a band lower ($500–$1,000 against $1,000–$1,500), 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 Junghans Form A Automatic may justify its premium with superior finishing, heritage, or resale value.

Both are suitable for daily wear. The Form A Automatic at 39.3mm with 50m (5 ATM) water resistance handles everyday situations. The Seastar 1000 Automatic at 40mm with 300m (30 ATM) is similarly capable. The Form A Automatic uses Flat Sapphire with Anti-Reflective Coating while the Seastar 1000 Automatic uses Sapphire Crystal.

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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.