Head-to-Head Comparison

Orient Kamasu Automatic Diver vs Tissot Seastar 1000 Automatic

Two divers compared — $250–$500 vs $500–$1,000

Quick Verdict

The Orient Kamasu Automatic Diver ($250–$500) offers Orient In-House Automatic precision in the tier below the Tissot Seastar 1000 Automatic ($500–$1,000). The Kamasu Automatic Diver measures 41.8mm and is rated 200m (20 ATM). The Seastar 1000 Automatic counters with Swiss Made craftsmanship and 300m (30 ATM) water resistance. Both are exceptional divers for their respective tiers.

OrientKamasu Automatic Diver$250–$500 Check price TissotSeastar 1000 Automatic$500–$1,000 Check price

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Orient

Kamasu Automatic Diver

$250–$500

Check Price Full Review

Tissot

Seastar 1000 Automatic

$500–$1,000

Check Price Full Review

Specifications Compared

Feature	Orient Kamasu Automatic Diver	Tissot Seastar 1000 Automatic
Price	$250–$500	$500–$1,000
Case Size	41.8mm	40mm
Movement	Automatic Caliber F6922	Automatic Powermatic 80 (Caliber 80.111)
Caliber Type	Orient In-House Automatic	ETA/Tissot Automatic
Power Reserve	40 Hours	80 Hours
Water Resistance	200m (20 ATM)	300m (30 ATM)
Crystal	Sapphire Crystal	Sapphire Crystal
Case Material	Stainless Steel	Stainless Steel
Origin	Made in Japan	Swiss Made

Category-by-Category Analysis

🎨

Design & Aesthetics

Edge: Draw

Orient's design language vs Tissot's approach

The Orient Kamasu Automatic Diver features a Stainless Steel case at 41.8mm 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

Edge: Tissot

Automatic Caliber F6922 vs Automatic Powermatic 80 (Caliber 80.111)

The Kamasu Automatic Diver runs the Automatic Caliber F6922 (Orient In-House Automatic, 40 Hours power reserve) at 21,600 vph (3 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.

📏

Wearability & Fit

Edge: Tissot

41.8mm vs 40mm — different wrist presence

At 41.8mm, the Kamasu Automatic Diver has a bolder wrist presence compared to the Seastar 1000 Automatic at 40mm. Water resistance differs: 200m (20 ATM) vs 300m (30 ATM).

💰

Value & Cost of Ownership

Edge: Orient

Orient sits in the lower tier

The Orient Kamasu Automatic Diver sits at $250–$500 and the Tissot Seastar 1000 Automatic at $500–$1,000. On the specs that outlast any price: the Kamasu Automatic Diver uses Sapphire Crystal with 40 Hours, against Sapphire Crystal and 80 Hours on the Seastar 1000 Automatic. Service intervals are typically 5-7 years for both.

💧

Water Resistance

Edge: Tissot

200m (20 ATM) vs 300m (30 ATM)

The Kamasu Automatic Diver is rated to 200m (20 ATM) while the Seastar 1000 Automatic handles 300m (30 ATM). The Seastar 1000 Automatic offers superior water resistance.

Our Verdict

Orient

Kamasu Automatic Diver

Choose the Orient Kamasu Automatic Diver if you prioritize Orient In-House Automatic engineering, Made in Japan craftsmanship, and 200m (20 ATM) water resistance. At $250–$500, it delivers Automatic Caliber F6922 with 40 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 Orient Kamasu Automatic Diver and Tissot Seastar 1000 Automatic represent two distinct approaches to the diver category — the Orient bringing Made in Japan tradition while Tissot delivers Swiss Made engineering.

Frequently Asked Questions

Neither is objectively better — they serve different preferences. The Orient Kamasu Automatic Diver ($250–$500) offers Automatic Caliber F6922 with 40 Hours power reserve, while the Tissot Seastar 1000 Automatic ($500–$1,000) features Automatic Powermatic 80 (Caliber 80.111) with 300m (30 ATM) water resistance. Choose based on your priorities: Made in Japan craftsmanship vs Swiss Made engineering.

The Orient Kamasu Automatic Diver offers better upfront value, sitting a tier lower at $250–$500. However, the Tissot Seastar 1000 Automatic may justify its premium with superior finishing, heritage, or resale value.

Both are suitable for daily wear. The Kamasu Automatic Diver at 41.8mm with 200m (20 ATM) water resistance handles everyday situations. The Seastar 1000 Automatic at 40mm with 300m (30 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.