Casio G-Shock DW-5600 Square vs Timex Marlin Automatic 40mm
Casio's diver meets Timex's timepiece
Quick Verdict
The Casio G-Shock DW-5600 Square ($50–$100) offers Casio Digital Quartz (Battery) precision in the tier below the Timex Marlin Automatic 40mm ($250–$500). The G-Shock DW-5600 Square measures 42.8mm (Square) and is rated 200m (20 ATM). The Marlin Automatic 40mm counters with Made in Japan (Movement) craftsmanship and 30m (3 ATM) water resistance. Both are exceptional watches for their respective tiers.
Transparency — We earn a small commission on purchases made through our Amazon links. This doesn't affect our editorial independence.
Specifications Compared
| Feature | Casio G-Shock DW-5600 Square | Timex Marlin Automatic 40mm |
|---|---|---|
| Price | $50–$100 | $250–$500 |
| Case Size | 42.8mm (Square) | 40mm |
| Movement | Quartz Module 3229 | Automatic Miyota 8205 |
| Caliber Type | Casio Digital Quartz (Battery) | Miyota Automatic |
| Power Reserve | 2-Year Battery | 40 Hours |
| Water Resistance | 200m (20 ATM) | 30m (3 ATM) |
| Crystal | Mineral Glass | Mineral Crystal |
| Case Material | Resin | Stainless Steel |
| Origin | Casio (Japan) | Made in Japan (Movement) |
Category-by-Category Analysis
Design & Aesthetics
Casio's design language vs Timex's approach
The Casio G-Shock DW-5600 Square features a Resin case at 42.8mm (Square) with Mineral Glass protection. The Timex Marlin Automatic 40mm offers Stainless Steel construction at 40mm with Mineral Crystal. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Quartz Module 3229 vs Automatic Miyota 8205
The G-Shock DW-5600 Square runs the Quartz Module 3229 (Casio Digital Quartz (Battery), 2-Year Battery power reserve) at standard frequency. The Marlin Automatic 40mm uses the Automatic Miyota 8205 (Miyota Automatic, 40 Hours reserve) at 21,600 vph (3 Hz). The Marlin Automatic 40mm offers a longer power reserve.
Wearability & Fit
42.8mm (Square) vs 40mm — different wrist presence
At 42.8mm (Square), the G-Shock DW-5600 Square has a bolder wrist presence compared to the Marlin Automatic 40mm at 40mm. Water resistance differs: 200m (20 ATM) vs 30m (3 ATM).
Value & Cost of Ownership
Casio sits in the lower tier
The Casio G-Shock DW-5600 Square sits at $50–$100 and the Timex Marlin Automatic 40mm at $250–$500. On the specs that outlast any price: the G-Shock DW-5600 Square uses Mineral Glass with 2-Year Battery, against Mineral Crystal and 40 Hours on the Marlin Automatic 40mm. Service intervals are typically 5-7 years for both.
Water Resistance
200m (20 ATM) vs 30m (3 ATM)
The G-Shock DW-5600 Square is rated to 200m (20 ATM) while the Marlin Automatic 40mm handles 30m (3 ATM). The G-Shock DW-5600 Square is better suited for water activities.
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 AmazonTimex
Marlin Automatic 40mm
Choose the Timex Marlin Automatic 40mm if you value Miyota Automatic technology, Made in Japan (Movement) heritage, and 40mm proportions. At $250–$500, the Automatic Miyota 8205 with 40 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Casio G-Shock DW-5600 Square and Timex Marlin Automatic 40mm represent two distinct approaches to fine watchmaking — the Casio bringing Casio (Japan) tradition while Timex delivers Made in Japan (Movement) engineering.
Frequently Asked Questions
More Comparisons
Tag Heuer Carrera Chronograph vs Casio G-Shock DW-5600 Square
Tag Heuer's chronograph meets Casio's diver
Tag Heuer Carrera Chronograph vs Timex Marlin Automatic 40mm
Tag Heuer's chronograph meets Timex's timepiece
Tissot PRX Powermatic 80 vs Casio G-Shock DW-5600 Square
Tissot's timepiece meets Casio'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.