Citizen Tsuyosa Automatic vs Orient Kamasu Automatic Diver
Citizen's timepiece meets Orient's diver
Quick Verdict
The Citizen Tsuyosa Automatic ($250–$500) and Orient Kamasu Automatic Diver ($250–$500) are closely matched timepieces at similar price points. The Tsuyosa Automatic emphasizes Citizen/Miyota In-House Automatic engineering while the Kamasu Automatic Diver focuses on Made in Japan craftsmanship.
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Specifications Compared
| Feature | Citizen Tsuyosa Automatic | Orient Kamasu Automatic Diver |
|---|---|---|
| Price | $250–$500 | $250–$500 |
| Case Size | 40mm | 41.8mm |
| Movement | Automatic Caliber 8210 | Automatic Caliber F6922 |
| Caliber Type | Citizen/Miyota In-House Automatic | Orient In-House Automatic |
| Power Reserve | 40 Hours | 40 Hours |
| Water Resistance | 50m (5 ATM) | 200m (20 ATM) |
| Crystal | Sapphire Crystal with Cyclops | Sapphire Crystal |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Made in Japan | Made in Japan |
Category-by-Category Analysis
Design & Aesthetics
Citizen's design language vs Orient's approach
The Citizen Tsuyosa Automatic features a Stainless Steel case at 40mm with Sapphire Crystal with Cyclops protection. The Orient Kamasu Automatic Diver offers Stainless Steel construction at 41.8mm with Sapphire Crystal. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic Caliber 8210 vs Automatic Caliber F6922
The Tsuyosa Automatic runs the Automatic Caliber 8210 (Citizen/Miyota In-House Automatic, 40 Hours power reserve) at 21,600 vph (3 Hz) frequency. The Kamasu Automatic Diver uses the Automatic Caliber F6922 (Orient In-House Automatic, 40 Hours reserve) at 21,600 vph (3 Hz). Power reserves are closely matched.
Wearability & Fit
40mm vs 41.8mm — different wrist presence
At 40mm, the Tsuyosa Automatic wears more compactly on smaller wrists compared to the Kamasu Automatic Diver at 41.8mm. Water resistance differs: 50m (5 ATM) vs 200m (20 ATM).
Value & Cost of Ownership
Same tier — different value propositions
The Citizen Tsuyosa Automatic sits at $250–$500 and the Orient Kamasu Automatic Diver at $250–$500. On the specs that outlast any price: the Tsuyosa Automatic uses Sapphire Crystal with Cyclops with 40 Hours, against Sapphire Crystal and 40 Hours on the Kamasu Automatic Diver. Service intervals are typically 5-7 years for both.
Water Resistance
50m (5 ATM) vs 200m (20 ATM)
The Tsuyosa Automatic is rated to 50m (5 ATM) while the Kamasu Automatic Diver handles 200m (20 ATM). The Kamasu Automatic Diver offers superior water resistance.
Our Verdict
Citizen
Tsuyosa Automatic
Choose the Citizen Tsuyosa Automatic if you prioritize Citizen/Miyota In-House Automatic engineering, Made in Japan craftsmanship, and 50m (5 ATM) water resistance. At $250–$500, it delivers Automatic Caliber 8210 with 40 Hours power reserve.
Check Price on AmazonOrient
Kamasu Automatic Diver
Choose the Orient Kamasu Automatic Diver if you value Orient In-House Automatic technology, Made in Japan heritage, and 41.8mm proportions. At $250–$500, the Automatic Caliber F6922 with 40 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Citizen Tsuyosa Automatic and Orient Kamasu Automatic Diver represent two distinct approaches to fine watchmaking — the Citizen bringing Made in Japan tradition while Orient delivers Made in Japan 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.