Frederique Constant Classic Quartz Moonphase vs Seiko Prospex 62MAS Modern Re-interpretation
Frederique Constant's dress watch meets Seiko's diver
Quick Verdict
The Frederique Constant Classic Quartz Moonphase ($1,000–$1,500) and Seiko Prospex 62MAS Modern Re-interpretation ($1,000–$1,500) are closely matched timepieces at similar price points. The Classic Quartz Moonphase emphasizes Swiss Quartz engineering while the Prospex 62MAS Modern Re-interpretation focuses on Made in Japan craftsmanship.
Transparency — We earn a small commission on purchases made through our Amazon links. This doesn't affect our editorial independence.
Specifications Compared
| Feature | Frederique Constant Classic Quartz Moonphase | Seiko Prospex 62MAS Modern Re-interpretation |
|---|---|---|
| Price | $1,000–$1,500 | $1,000–$1,500 |
| Case Size | 40mm | 40.5mm |
| Movement | Quartz FC-206 | Automatic 6R35 |
| Caliber Type | Swiss Quartz | Seiko In-House Automatic |
| Power Reserve | Battery | 70 Hours |
| Water Resistance | 50m (5 ATM) | 200m (20 ATM) |
| Crystal | Anti-Reflective Sapphire Crystal | Sapphire |
| Case Material | Stainless Steel | Stainless Steel with Super-Hard Coating |
| Origin | Swiss Made | Made in Japan |
Category-by-Category Analysis
Design & Aesthetics
Frederique Constant's design language vs Seiko's approach
The Frederique Constant Classic Quartz Moonphase features a Stainless Steel case at 40mm with Anti-Reflective Sapphire Crystal protection. The Seiko Prospex 62MAS Modern Re-interpretation offers Stainless Steel with Super-Hard Coating construction at 40.5mm with Sapphire. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Quartz FC-206 vs Automatic 6R35
The Classic Quartz Moonphase runs the Quartz FC-206 (Swiss Quartz, Battery power reserve) at standard frequency. The Prospex 62MAS Modern Re-interpretation uses the Automatic 6R35 (Seiko In-House Automatic, 70 Hours reserve) at 21,600 vph (3 Hz). The Prospex 62MAS Modern Re-interpretation offers a longer power reserve.
Wearability & Fit
40mm vs 40.5mm — different wrist presence
At 40mm, the Classic Quartz Moonphase wears more compactly on smaller wrists compared to the Prospex 62MAS Modern Re-interpretation at 40.5mm. Water resistance differs: 50m (5 ATM) vs 200m (20 ATM).
Value & Cost of Ownership
Same tier — different value propositions
The Frederique Constant Classic Quartz Moonphase sits at $1,000–$1,500 and the Seiko Prospex 62MAS Modern Re-interpretation at $1,000–$1,500. On the specs that outlast any price: the Classic Quartz Moonphase uses Anti-Reflective Sapphire Crystal with Battery, against Sapphire and 70 Hours on the Prospex 62MAS Modern Re-interpretation. Service intervals are typically 5-7 years for both.
Water Resistance
50m (5 ATM) vs 200m (20 ATM)
The Classic Quartz Moonphase is rated to 50m (5 ATM) while the Prospex 62MAS Modern Re-interpretation handles 200m (20 ATM). The Prospex 62MAS Modern Re-interpretation offers superior water resistance.
Our Verdict
Frederique Constant
Classic Quartz Moonphase
Choose the Frederique Constant Classic Quartz Moonphase if you prioritize Swiss Quartz engineering, Swiss Made craftsmanship, and 50m (5 ATM) water resistance. At $1,000–$1,500, it delivers Quartz FC-206 with Battery power reserve.
Check Price on AmazonSeiko
Prospex 62MAS Modern Re-interpretation
Choose the Seiko Prospex 62MAS Modern Re-interpretation if you value Seiko In-House Automatic technology, Made in Japan heritage, and 40.5mm proportions. At $1,000–$1,500, the Automatic 6R35 with 70 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Frederique Constant Classic Quartz Moonphase and Seiko Prospex 62MAS Modern Re-interpretation represent two distinct approaches to fine watchmaking — the Frederique Constant bringing Swiss Made tradition while Seiko delivers Made in Japan engineering.
Frequently Asked Questions
More Comparisons
Oris Aquis vs Seiko SPB143 (62MAS)
Swiss independence meets Japanese precision diving
Tag Heuer Carrera Chronograph vs Frederique Constant Classic Quartz Moonphase
Tag Heuer's chronograph meets Frederique Constant's dress watch
Tag Heuer Carrera Chronograph vs Seiko Prospex 62MAS Modern Re-interpretation
Tag Heuer's chronograph meets Seiko's diver
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.