Omega Speedmaster Professional vs Orient Sun & Moon
Omega's chronograph meets Orient's dress watch
Quick Verdict
The Orient Sun & Moon ($250–$500) delivers Orient In-House Automatic (Hacking, Hand-Winding) technology in the tier below the Omega Speedmaster Professional ($5,000–$10,000). The Sun & Moon measures 41.5mm and is rated 50m (5 ATM). The Speedmaster Professional justifies its premium with Swiss Made heritage and Manual-Winding Caliber 3861. Both represent excellent choices in the luxury watch category.
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Specifications Compared
| Feature | Omega Speedmaster Professional | Orient Sun & Moon |
|---|---|---|
| Price | $5,000–$10,000 | $250–$500 |
| Case Size | 42mm | 41.5mm |
| Movement | Manual-Winding Caliber 3861 | Automatic Caliber F6B24 |
| Caliber Type | In-House Manual-Winding Manufacture (Co-Axial) | Orient In-House Automatic (Hacking, Hand-Winding) |
| Power Reserve | 50 Hours | 40 Hours |
| Water Resistance | 50m (5 ATM) | 50m (5 ATM) |
| Crystal | Hesalite or Sapphire | Mineral Glass |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Swiss Made | Made in Japan |
Category-by-Category Analysis
Design & Aesthetics
Omega's design language vs Orient's approach
The Omega Speedmaster Professional features a Stainless Steel case at 42mm with Hesalite or Sapphire protection. The Orient Sun & Moon offers Stainless Steel construction at 41.5mm with Mineral Glass. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Manual-Winding Caliber 3861 vs Automatic Caliber F6B24
The Speedmaster Professional runs the Manual-Winding Caliber 3861 (In-House Manual-Winding Manufacture (Co-Axial), 50 Hours power reserve) at 21,600 vph (3 Hz) frequency. The Sun & Moon uses the Automatic Caliber F6B24 (Orient In-House Automatic (Hacking, Hand-Winding), 40 Hours reserve) at 21,600 vph (3 Hz). The Speedmaster Professional edges ahead on power reserve.
Wearability & Fit
42mm vs 41.5mm — different wrist presence
At 42mm, the Speedmaster Professional has a bolder wrist presence compared to the Sun & Moon at 41.5mm. Water resistance differs: 50m (5 ATM) vs 50m (5 ATM).
Value & Cost of Ownership
Orient sits in the lower tier
The Omega Speedmaster Professional sits at $5,000–$10,000 and the Orient Sun & Moon at $250–$500. On the specs that outlast any price: the Speedmaster Professional uses Hesalite or Sapphire with 50 Hours, against Mineral Glass and 40 Hours on the Sun & Moon. Service intervals are typically 5-7 years for both.
Water Resistance
50m (5 ATM) vs 50m (5 ATM)
The Speedmaster Professional is rated to 50m (5 ATM) while the Sun & Moon handles 50m (5 ATM). Both offer identical water resistance ratings.
Our Verdict
Omega
Speedmaster Professional
Choose the Omega Speedmaster Professional if you prioritize In-House Manual-Winding Manufacture (Co-Axial) engineering, Swiss Made craftsmanship, and 50m (5 ATM) water resistance. At $5,000–$10,000, it delivers Manual-Winding Caliber 3861 with 50 Hours power reserve.
Check Price on AmazonOrient
Sun & Moon
Choose the Orient Sun & Moon if you value Orient In-House Automatic (Hacking, Hand-Winding) technology, Made in Japan heritage, and 41.5mm proportions. At $250–$500, the Automatic Caliber F6B24 with 40 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Omega Speedmaster Professional and Orient Sun & Moon represent two distinct approaches to fine watchmaking — the Omega bringing Swiss Made 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.