Head-to-Head Comparison

Casio G-Shock DW-5600 Square vs Longines Master Collection Moonphase

Casio's diver meets Longines's dress watch

Quick Verdict

The Casio G-Shock DW-5600 Square (~$95) offers Casio Digital Quartz (Battery) precision at $2,905 less than the Longines Master Collection Moonphase (~$3,000). The Master Collection Moonphase counters with Swiss Made craftsmanship and 30m (3 ATM) water resistance. Both are exceptional watches for their respective price points.

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Casio G-Shock DW-5600 Square

Casio

G-Shock DW-5600 Square

~$95

Longines Master Collection Moonphase

Longines

Master Collection Moonphase

~$3,000

Specifications Compared

FeatureCasio G-Shock DW-5600 SquareLongines Master Collection Moonphase
Price~$95~$3,000
Case Size42.8mm (Square)40mm
MovementQuartz Module 3229Automatic Caliber L899
Caliber TypeCasio Digital Quartz (Battery)Automatic (ETA A31.L91 base)
Power Reserve2-Year Battery72 Hours
Water Resistance200m (20 ATM)30m (3 ATM)
CrystalMineral GlassSapphire Crystal
Case MaterialResinStainless Steel
OriginCasio (Japan)Swiss Made

Category-by-Category Analysis

🎨

Design & Aesthetics

Edge: Draw

Casio's design language vs Longines's approach

⚙️

Movement & Performance

Edge: Longines

Quartz Module 3229 vs Automatic Caliber L899

📏

Wearability & Fit

Edge: Longines

42.8mm (Square) vs 40mm — different wrist presence

💰

Value & Cost of Ownership

Edge: Casio

Casio is $2,905 more affordable

💧

Water Resistance

Edge: Casio

200m (20 ATM) vs 30m (3 ATM)

Our Verdict

Casio

G-Shock DW-5600 Square

Choose the Casio G-Shock DW-5600 Square if you prioritize Casio Digital Quartz (Battery) engineering, Casio (Japan) craftsmanship, and 200m (20 ATM) water resistance. At ~$95, it delivers Quartz Module 3229 with 2-Year Battery power reserve.

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Longines

Master Collection Moonphase

Choose the Longines Master Collection Moonphase if you value Automatic (ETA A31.L91 base) technology, Swiss Made heritage, and 40mm proportions. At ~$3,000, the Automatic Caliber L899 with 72 Hours power reserve makes it a compelling choice.

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The Bottom Line

The Casio G-Shock DW-5600 Square and Longines Master Collection Moonphase represent two distinct approaches to fine watchmaking — the Casio bringing Casio (Japan) tradition while Longines delivers Swiss Made engineering.

Frequently Asked Questions