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Orient Kamasu Automatic Diver vs Tudor Black Bay Ceramic M79210CNU-0001 (black ceramic, black dial, hybrid strap)
Orient's diver meets Tudor's chronograph
Quick Verdict
The Orient Kamasu Automatic Diver ($250–$500) offers Orient In-House Automatic precision in the tier below the Tudor Black Bay Ceramic M79210CNU-0001 (black ceramic, black dial, hybrid strap) ($5,000–$10,000). The Kamasu Automatic Diver measures 41.8mm and is rated 200m (20 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 | Orient Kamasu Automatic Diver | Tudor Black Bay Ceramic M79210CNU-0001 (black ceramic, black dial, hybrid strap) |
|---|---|---|
| Price | $250–$500 | $5,000–$10,000 |
| Case Size | 41.8mm | 41mm |
| Movement | Automatic Caliber F6922 | Automatic, Tudor manufacture calibre MT5602-1U, Master Chronometer (METAS) |
| Caliber Type | Orient In-House Automatic | MT5602-1U, Master Chronometer |
| Power Reserve | 40 Hours | About 70 hours |
| Water Resistance | 200m (20 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 | Made in Japan | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Orient's design language vs Tudor's approach
The Orient Kamasu Automatic Diver features a Stainless Steel case at 41.8mm 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 Caliber F6922 vs Automatic, Tudor manufacture calibre MT5602-1U, Master Chronometer (METAS)
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 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 Black Bay Ceramic M79210CNU-0001 (black ceramic, black dial, hybrid strap) offers a longer power reserve.
Wearability & Fit
41.8mm vs 41mm — different wrist presence
At 41.8mm, the Kamasu Automatic Diver has a bolder wrist presence compared to the Black Bay Ceramic M79210CNU-0001 (black ceramic, black dial, hybrid strap) at 41mm. Water resistance differs: 200m (20 ATM) vs 200m (20 ATM).
Value & Cost of Ownership
Orient sits in the lower tier
The Orient Kamasu Automatic Diver sits at $250–$500 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 Kamasu Automatic Diver uses Sapphire Crystal with 40 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
200m (20 ATM) vs 200m (20 ATM)
The Kamasu Automatic Diver is rated to 200m (20 ATM) while the Black Bay Ceramic M79210CNU-0001 (black ceramic, black dial, hybrid strap) handles 200m (20 ATM). Both offer identical water resistance ratings.
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.
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 Orient Kamasu Automatic Diver and Tudor Black Bay Ceramic M79210CNU-0001 (black ceramic, black dial, hybrid strap) represent two distinct approaches to fine watchmaking — the Orient bringing Made in Japan 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.