Casio G-Shock DW-5600 Square vs Seiko Prospex "Turtle"
Two divers compared — ~$95 vs ~$500
Quick Verdict
The Casio G-Shock DW-5600 Square (~$95) offers Casio Digital Quartz (Battery) precision at $405 less than the Seiko Prospex "Turtle" (~$500). The Prospex "Turtle" counters with Made in Japan craftsmanship and 200m (20 ATM) Diver water resistance. Both are exceptional divers for their respective price points.
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Specifications Compared
| Feature | Casio G-Shock DW-5600 Square | Seiko Prospex "Turtle" |
|---|---|---|
| Price | ~$95 | ~$500 |
| Case Size | 42.8mm (Square) | 45mm |
| Movement | Quartz Module 3229 | Automatic Caliber 4R36 |
| Caliber Type | Casio Digital Quartz (Battery) | In-House Automatic Manufacture |
| Power Reserve | 2-Year Battery | 41 Hours |
| Water Resistance | 200m (20 ATM) | 200m (20 ATM) Diver |
| Crystal | Mineral Glass | Sapphire Crystal |
| Case Material | Resin | Stainless Steel |
| Origin | Casio (Japan) | Made in Japan |
Category-by-Category Analysis
Design & Aesthetics
Casio's design language vs Seiko's approach
Movement & Performance
Quartz Module 3229 vs Automatic Caliber 4R36
Wearability & Fit
42.8mm (Square) vs 45mm — different wrist presence
Value & Cost of Ownership
Casio is $405 more affordable
Water Resistance
200m (20 ATM) vs 200m (20 ATM) Diver
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.
Check Price on AmazonSeiko
Prospex "Turtle"
Choose the Seiko Prospex "Turtle" if you value In-House Automatic Manufacture technology, Made in Japan heritage, and 45mm proportions. At ~$500, the Automatic Caliber 4R36 with 41 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Casio G-Shock DW-5600 Square and Seiko Prospex "Turtle" represent two distinct approaches to the diver category — the Casio bringing Casio (Japan) tradition while Seiko delivers Made in Japan engineering.