Casio G-Shock DW-5600 Square vs Longines HydroConquest Automatic
Two divers compared — $50–$100 vs $1,500–$2,500
Quick Verdict
The Casio G-Shock DW-5600 Square ($50–$100) offers Casio Digital Quartz (Battery) precision in the tier below the Longines HydroConquest Automatic ($1,500–$2,500). The G-Shock DW-5600 Square measures 42.8mm (Square) and is rated 200m (20 ATM). The HydroConquest Automatic counters with Swiss Made craftsmanship and 300m (30 ATM) water resistance. Both are exceptional divers for their respective tiers.
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Specifications Compared
| Feature | Casio G-Shock DW-5600 Square | Longines HydroConquest Automatic |
|---|---|---|
| Price | $50–$100 | $1,500–$2,500 |
| Case Size | 42.8mm (Square) | 41mm |
| Movement | Quartz Module 3229 | Automatic L888.5 |
| Caliber Type | Casio Digital Quartz (Battery) | ETA-Based Automatic with Silicon Balance Spring |
| Power Reserve | 2-Year Battery | 72 Hours |
| Water Resistance | 200m (20 ATM) | 300m (30 ATM) |
| Crystal | Mineral Glass | Sapphire with Anti-Reflective Coating |
| Case Material | Resin | Stainless Steel |
| Origin | Casio (Japan) | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Casio's design language vs Longines's approach
The Casio G-Shock DW-5600 Square features a Resin case at 42.8mm (Square) with Mineral Glass protection. The Longines HydroConquest Automatic offers Stainless Steel construction at 41mm with Sapphire with Anti-Reflective Coating. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Quartz Module 3229 vs Automatic L888.5
The G-Shock DW-5600 Square runs the Quartz Module 3229 (Casio Digital Quartz (Battery), 2-Year Battery power reserve) at standard frequency. The HydroConquest Automatic uses the Automatic L888.5 (ETA-Based Automatic with Silicon Balance Spring, 72 Hours reserve) at 25,200 vph (3.5 Hz). The HydroConquest Automatic offers a longer power reserve.
Wearability & Fit
42.8mm (Square) vs 41mm — different wrist presence
At 42.8mm (Square), the G-Shock DW-5600 Square has a bolder wrist presence compared to the HydroConquest Automatic at 41mm. Water resistance differs: 200m (20 ATM) vs 300m (30 ATM).
Value & Cost of Ownership
Casio sits in the lower tier
The Casio G-Shock DW-5600 Square sits at $50–$100 and the Longines HydroConquest Automatic at $1,500–$2,500. On the specs that outlast any price: the G-Shock DW-5600 Square uses Mineral Glass with 2-Year Battery, against Sapphire with Anti-Reflective Coating and 72 Hours on the HydroConquest Automatic. Service intervals are typically 5-7 years for both.
Water Resistance
200m (20 ATM) vs 300m (30 ATM)
The G-Shock DW-5600 Square is rated to 200m (20 ATM) while the HydroConquest Automatic handles 300m (30 ATM). The HydroConquest Automatic offers superior water resistance.
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 $50–$100, it delivers Quartz Module 3229 with 2-Year Battery power reserve.
Check Price on AmazonLongines
HydroConquest Automatic
Choose the Longines HydroConquest Automatic if you value ETA-Based Automatic with Silicon Balance Spring technology, Swiss Made heritage, and 41mm proportions. At $1,500–$2,500, the Automatic L888.5 with 72 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Casio G-Shock DW-5600 Square and Longines HydroConquest Automatic represent two distinct approaches to the diver category — the Casio bringing Casio (Japan) tradition while Longines delivers Swiss Made engineering.
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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.