Head-to-Head Comparison

Updated September 5, 2026

Frederique Constant Classic Quartz Moonphase vs Invicta Pro Diver Automatic 23681

Frederique Constant's dress watch meets Invicta's diver

Quick Verdict

The Invicta Pro Diver Automatic 23681 ($50–$100) delivers Automatic (Seiko NH35A) technology in the tier below the Frederique Constant Classic Quartz Moonphase ($1,000–$1,500). The Pro Diver Automatic 23681 measures 40mm and is rated 200m. The Classic Quartz Moonphase justifies its premium with Swiss Made heritage and Quartz FC-206. Both represent excellent choices in the luxury watch category.

Frederique ConstantClassic Quartz Moonphase$1,000–$1,500 Check price InvictaPro Diver Automatic 23681$50–$100 Check price

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Frederique Constant

Classic Quartz Moonphase

$1,000–$1,500

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Invicta

Pro Diver Automatic 23681

$50–$100

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Specifications Compared

Feature	Frederique Constant Classic Quartz Moonphase	Invicta Pro Diver Automatic 23681
Price	$1,000–$1,500	$50–$100
Case Size	40mm	40mm
Movement	Quartz FC-206	Automatic NH35A
Caliber Type	Swiss Quartz	Automatic (Seiko NH35A)
Power Reserve	Battery	—
Water Resistance	50m (5 ATM)	200m
Crystal	Anti-Reflective Sapphire Crystal	Mineral Glass
Case Material	Stainless Steel	—
Origin	Swiss Made	Invicta (Japanese movement)

Category-by-Category Analysis

🎨

Design & Aesthetics

Edge: Draw

Frederique Constant's design language vs Invicta's approach

The Frederique Constant Classic Quartz Moonphase features a Stainless Steel case at 40mm with Anti-Reflective Sapphire Crystal protection. The Invicta Pro Diver Automatic 23681 offers steel construction at 40mm with Mineral Glass. Both represent their brand's distinct design philosophy and heritage.

⚙️

Movement & Performance

Edge: Draw

Quartz FC-206 vs Automatic NH35A

The Classic Quartz Moonphase runs the Quartz FC-206 (Swiss Quartz, Battery power reserve) at standard frequency. The Pro Diver Automatic 23681 uses the Automatic NH35A (Automatic (Seiko NH35A), standard reserve) at standard. Power reserves are closely matched.

📏

Wearability & Fit

Edge: Draw

40mm vs 40mm — different wrist presence

At 40mm, the Classic Quartz Moonphase is similarly sized compared to the Pro Diver Automatic 23681 at 40mm. Water resistance differs: 50m (5 ATM) vs 200m.

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Value & Cost of Ownership

Edge: Invicta

Invicta sits in the lower tier

The Frederique Constant Classic Quartz Moonphase sits at $1,000–$1,500 and the Invicta Pro Diver Automatic 23681 at $50–$100. On the specs that outlast any price: the Classic Quartz Moonphase uses Anti-Reflective Sapphire Crystal with Battery, against Mineral Glass and a standard reserve on the Pro Diver Automatic 23681. Service intervals are typically 5-7 years for both.

💧

Water Resistance

Edge: Invicta

50m (5 ATM) vs 200m

The Classic Quartz Moonphase is rated to 50m (5 ATM) while the Pro Diver Automatic 23681 handles 200m. The Pro Diver Automatic 23681 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.

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Invicta

Pro Diver Automatic 23681

Choose the Invicta Pro Diver Automatic 23681 if you value Automatic (Seiko NH35A) technology, Invicta (Japanese movement) heritage, and 40mm proportions. At $50–$100, the Automatic NH35A with ample power reserve makes it a compelling choice.

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The Bottom Line

The Frederique Constant Classic Quartz Moonphase and Invicta Pro Diver Automatic 23681 represent two distinct approaches to fine watchmaking — the Frederique Constant bringing Swiss Made tradition while Invicta delivers Invicta (Japanese movement) engineering.

Frequently Asked Questions

The Invicta Pro Diver Automatic 23681 is the better buy if you want a mechanical movement; the Frederique Constant Classic Quartz Moonphase is the better buy if you want quartz accuracy with no servicing. For water, the Invicta Pro Diver Automatic 23681 is rated 200 m against 50 m, which is the difference between swimming and diving on one side and splashes on the other. On price, the Invicta Pro Diver Automatic 23681 sits a band lower ($50–$100 against $1,000–$1,500), so it is the cheaper way into the category. Neither is better at everything; the spec table above shows movement, case size, water resistance and crystal side by side so you can weigh what matters to you. We do not test units, so this is the makers' data, not a bench result.

The Invicta Pro Diver Automatic 23681 offers better upfront value, sitting a tier lower at $50–$100. However, the Frederique Constant Classic Quartz Moonphase may justify its premium with superior finishing, heritage, or resale value.

Both are suitable for daily wear. The Classic Quartz Moonphase at 40mm with 50m (5 ATM) water resistance handles everyday situations. The Pro Diver Automatic 23681 at 40mm with 200m is similarly capable. The Classic Quartz Moonphase uses Anti-Reflective Sapphire Crystal while the Pro Diver Automatic 23681 uses Mineral Glass. Sapphire resists scratches noticeably better than mineral glass.

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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.