Omega Speedmaster Professional vs Casio Pro Trek PRG340-1
Omega's chronograph meets Casio's timepiece
Quick Verdict
The Casio Pro Trek PRG340-1 ($150–$250) delivers Tough Solar Quartz (No Battery Change) technology in the tier below the Omega Speedmaster Professional ($5,000–$10,000). The Pro Trek PRG340-1 measures 54.7 × 51.7 × 15.1mm and is rated 100m (10 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.
Transparency — We earn a small commission on purchases made through our Amazon links. This doesn't affect our editorial independence.
Specifications Compared
| Feature | Omega Speedmaster Professional | Casio Pro Trek PRG340-1 |
|---|---|---|
| Price | $5,000–$10,000 | $150–$250 |
| Case Size | 42mm | 54.7 × 51.7 × 15.1mm |
| Movement | Manual-Winding Caliber 3861 | Tough Solar (Solar Quartz) |
| Caliber Type | In-House Manual-Winding Manufacture (Co-Axial) | Tough Solar Quartz (No Battery Change) |
| Power Reserve | 50 Hours | Tough Solar (Rechargeable) |
| Water Resistance | 50m (5 ATM) | 100m (10 ATM) |
| Crystal | Hesalite or Sapphire | Mineral Glass |
| Case Material | Stainless Steel | Bio-Based Resin |
| Origin | Swiss Made | Casio (Japan) |
Category-by-Category Analysis
Design & Aesthetics
Omega's design language vs Casio's approach
The Omega Speedmaster Professional features a Stainless Steel case at 42mm with Hesalite or Sapphire protection. The Casio Pro Trek PRG340-1 offers Bio-Based Resin construction at 54.7 × 51.7 × 15.1mm with Mineral Glass. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Manual-Winding Caliber 3861 vs Tough Solar (Solar Quartz)
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 Pro Trek PRG340-1 uses the Tough Solar (Solar Quartz) (Tough Solar Quartz (No Battery Change), Tough Solar (Rechargeable) reserve) at standard. The Speedmaster Professional edges ahead on power reserve.
Wearability & Fit
42mm vs 54.7 × 51.7 × 15.1mm — different wrist presence
At 42mm, the Speedmaster Professional wears more compactly on smaller wrists compared to the Pro Trek PRG340-1 at 54.7 × 51.7 × 15.1mm. Water resistance differs: 50m (5 ATM) vs 100m (10 ATM).
Value & Cost of Ownership
Casio sits in the lower tier
The Omega Speedmaster Professional sits at $5,000–$10,000 and the Casio Pro Trek PRG340-1 at $150–$250. On the specs that outlast any price: the Speedmaster Professional uses Hesalite or Sapphire with 50 Hours, against Mineral Glass and Tough Solar (Rechargeable) on the Pro Trek PRG340-1. Service intervals are typically 5-7 years for both.
Water Resistance
50m (5 ATM) vs 100m (10 ATM)
The Speedmaster Professional is rated to 50m (5 ATM) while the Pro Trek PRG340-1 handles 100m (10 ATM). The Pro Trek PRG340-1 offers superior water resistance.
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 AmazonCasio
Pro Trek PRG340-1
Choose the Casio Pro Trek PRG340-1 if you value Tough Solar Quartz (No Battery Change) technology, Casio (Japan) heritage, and 54.7 × 51.7 × 15.1mm proportions. At $150–$250, the Tough Solar (Solar Quartz) with Tough Solar (Rechargeable) power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Omega Speedmaster Professional and Casio Pro Trek PRG340-1 represent two distinct approaches to fine watchmaking — the Omega bringing Swiss Made tradition while Casio delivers Casio (Japan) engineering.
Frequently Asked Questions
More Comparisons
Omega Speedmaster vs Breitling Navitimer
The Moon Watch meets the Pilot's Chronograph
Tag Heuer Carrera Chronograph vs Omega Speedmaster Professional
Two chronographs compared — $2,500–$5,000 vs $5,000–$10,000
Tag Heuer Carrera Chronograph vs Casio Pro Trek PRG340-1
Tag Heuer's chronograph meets Casio's timepiece
Explore These Watches
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.