Head-to-Head Comparison

Casio AE1200 World Time "Casio Royale" vs Frederique Constant Slimline Moonphase Manufacture

Casio's timepiece meets Frederique Constant's dress watch

Quick Verdict

The Casio AE1200 World Time "Casio Royale" (Under $50) offers Casio Digital Quartz (Battery) precision in the tier below the Frederique Constant Slimline Moonphase Manufacture ($2,500–$5,000). The AE1200 World Time "Casio Royale" measures 42.1mm and is rated 100m (10 ATM). The Slimline Moonphase Manufacture counters with Swiss Made craftsmanship and 30m (3 ATM) water resistance. Both are exceptional watches for their respective tiers.

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Casio AE1200 World Time "Casio Royale"

Casio

AE1200 World Time "Casio Royale"

Under $50

Frederique Constant Slimline Moonphase Manufacture

Frederique Constant

Slimline Moonphase Manufacture

$2,500–$5,000

Specifications Compared

FeatureCasio AE1200 World Time "Casio Royale"Frederique Constant Slimline Moonphase Manufacture
PriceUnder $50$2,500–$5,000
Case Size42.1mm42mm
MovementQuartz Module 3299Automatic FC-705 (In-House)
Caliber TypeCasio Digital Quartz (Battery)In-House Automatic Manufacture
Power Reserve10-Year Battery42 Hours
Water Resistance100m (10 ATM)30m (3 ATM)
CrystalMineral GlassConvex Sapphire
Case MaterialResinStainless Steel
OriginCasio (Japan)Swiss Made

Category-by-Category Analysis

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Design & Aesthetics

Edge: Draw

Casio's design language vs Frederique Constant's approach

The Casio AE1200 World Time "Casio Royale" features a Resin case at 42.1mm with Mineral Glass protection. The Frederique Constant Slimline Moonphase Manufacture offers Stainless Steel construction at 42mm with Convex Sapphire. Both represent their brand's distinct design philosophy and heritage.

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Movement & Performance

Edge: Frederique Constant

Quartz Module 3299 vs Automatic FC-705 (In-House)

The AE1200 World Time "Casio Royale" runs the Quartz Module 3299 (Casio Digital Quartz (Battery), 10-Year Battery power reserve) at standard frequency. The Slimline Moonphase Manufacture uses the Automatic FC-705 (In-House) (In-House Automatic Manufacture, 42 Hours reserve) at 28,800 vph (4 Hz). The Slimline Moonphase Manufacture offers a longer power reserve.

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Wearability & Fit

Edge: Frederique Constant

42.1mm vs 42mm — different wrist presence

At 42.1mm, the AE1200 World Time "Casio Royale" has a bolder wrist presence compared to the Slimline Moonphase Manufacture at 42mm. Water resistance differs: 100m (10 ATM) vs 30m (3 ATM).

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Value & Cost of Ownership

Edge: Casio

Casio sits in the lower tier

The Casio AE1200 World Time "Casio Royale" sits at Under $50 and the Frederique Constant Slimline Moonphase Manufacture at $2,500–$5,000. On the specs that outlast any price: the AE1200 World Time "Casio Royale" uses Mineral Glass with 10-Year Battery, against Convex Sapphire and 42 Hours on the Slimline Moonphase Manufacture. Service intervals are typically 5-7 years for both.

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Water Resistance

Edge: Casio

100m (10 ATM) vs 30m (3 ATM)

The AE1200 World Time "Casio Royale" is rated to 100m (10 ATM) while the Slimline Moonphase Manufacture handles 30m (3 ATM). The AE1200 World Time "Casio Royale" is better suited for water activities.

Our Verdict

Casio

AE1200 World Time "Casio Royale"

Choose the Casio AE1200 World Time "Casio Royale" if you prioritize Casio Digital Quartz (Battery) engineering, Casio (Japan) craftsmanship, and 100m (10 ATM) water resistance. At Under $50, it delivers Quartz Module 3299 with 10-Year Battery power reserve.

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Frederique Constant

Slimline Moonphase Manufacture

Choose the Frederique Constant Slimline Moonphase Manufacture if you value In-House Automatic Manufacture technology, Swiss Made heritage, and 42mm proportions. At $2,500–$5,000, the Automatic FC-705 (In-House) with 42 Hours power reserve makes it a compelling choice.

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The Bottom Line

The Casio AE1200 World Time "Casio Royale" and Frederique Constant Slimline Moonphase Manufacture represent two distinct approaches to fine watchmaking — the Casio bringing Casio (Japan) tradition while Frederique Constant delivers Swiss Made engineering.

Frequently Asked Questions

Neither is objectively better — they serve different preferences. The Casio AE1200 World Time "Casio Royale" (Under $50) offers Quartz Module 3299 with 10-Year Battery power reserve, while the Frederique Constant Slimline Moonphase Manufacture ($2,500–$5,000) features Automatic FC-705 (In-House) with 30m (3 ATM) water resistance. Choose based on your priorities: Casio (Japan) craftsmanship vs Swiss Made engineering.
The Casio AE1200 World Time "Casio Royale" offers better upfront value, sitting a tier lower at Under $50. However, the Frederique Constant Slimline Moonphase Manufacture may justify its premium with superior finishing, heritage, or resale value.
Both are suitable for daily wear. The AE1200 World Time "Casio Royale" at 42.1mm with 100m (10 ATM) water resistance handles everyday situations. The Slimline Moonphase Manufacture at 42mm with 30m (3 ATM) is similarly capable. The AE1200 World Time "Casio Royale" uses Mineral Glass while the Slimline Moonphase Manufacture uses Convex Sapphire. Sapphire resists scratches noticeably better than mineral glass.

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.