Head-to-Head Comparison

Updated September 5, 2026

Casio Pro Trek PRG270-1 vs Casio G-Shock DW-5600 Square

Casio's timepiece meets Casio's diver

Quick Verdict

The Casio G-Shock DW-5600 Square ($50–$100) delivers Casio Digital Quartz (Battery) technology in the tier below the Casio Pro Trek PRG270-1 ($150–$250). The G-Shock DW-5600 Square measures 42.8mm (Square) and is rated 200m (20 ATM). The Pro Trek PRG270-1 justifies its premium with Casio (Japan) heritage and Tough Solar (Solar Quartz). Both represent excellent choices in the luxury watch category.

CasioPro Trek PRG270-1$150–$250 Check price CasioG-Shock DW-5600 Square$50–$100 Check price

Transparency — We earn a small commission on purchases made through our Amazon links. This doesn't affect our editorial independence.

Casio

Pro Trek PRG270-1

$150–$250

Check Price Full Review

Casio

G-Shock DW-5600 Square

$50–$100

Check Price Full Review

Specifications Compared

Feature	Casio Pro Trek PRG270-1	Casio G-Shock DW-5600 Square
Price	$150–$250	$50–$100
Case Size	54.6 × 52.4 × 15mm	42.8mm (Square)
Movement	Tough Solar (Solar Quartz)	Quartz Module 3229
Caliber Type	Tough Solar Quartz (No Battery Change)	Casio Digital Quartz (Battery)
Power Reserve	Tough Solar (Rechargeable)	2-Year Battery
Water Resistance	100m (10 ATM)	200m (20 ATM)
Crystal	Mineral Glass	Mineral Glass
Case Material	Resin	Resin
Origin	Casio (Japan)	Casio (Japan)

Category-by-Category Analysis

🎨

Design & Aesthetics

Edge: Draw

Casio's design language vs Casio's approach

The Casio Pro Trek PRG270-1 features a Resin case at 54.6 × 52.4 × 15mm with Mineral Glass protection. The Casio G-Shock DW-5600 Square offers Resin construction at 42.8mm (Square) with Mineral Glass. Both represent their brand's distinct design philosophy and heritage.

⚙️

Movement & Performance

Edge: Casio

Tough Solar (Solar Quartz) vs Quartz Module 3229

The Pro Trek PRG270-1 runs the Tough Solar (Solar Quartz) (Tough Solar Quartz (No Battery Change), Tough Solar (Rechargeable) power reserve) at standard frequency. The G-Shock DW-5600 Square uses the Quartz Module 3229 (Casio Digital Quartz (Battery), 2-Year Battery reserve) at standard. The G-Shock DW-5600 Square offers a longer power reserve.

📏

Wearability & Fit

Edge: Casio

54.6 × 52.4 × 15mm vs 42.8mm (Square) — different wrist presence

At 54.6 × 52.4 × 15mm, the Pro Trek PRG270-1 has a bolder wrist presence compared to the G-Shock DW-5600 Square at 42.8mm (Square). Water resistance differs: 100m (10 ATM) vs 200m (20 ATM).

💰

Value & Cost of Ownership

Edge: Casio

Casio sits in the lower tier

The Casio Pro Trek PRG270-1 sits at $150–$250 and the Casio G-Shock DW-5600 Square at $50–$100. On the specs that outlast any price: the Pro Trek PRG270-1 uses Mineral Glass with Tough Solar (Rechargeable), against Mineral Glass and 2-Year Battery on the G-Shock DW-5600 Square. Service intervals are typically 5-7 years for both.

💧

Water Resistance

Edge: Casio

100m (10 ATM) vs 200m (20 ATM)

The Pro Trek PRG270-1 is rated to 100m (10 ATM) while the G-Shock DW-5600 Square handles 200m (20 ATM). The G-Shock DW-5600 Square offers superior water resistance.

Our Verdict

Casio

Pro Trek PRG270-1

Choose the Casio Pro Trek PRG270-1 if you prioritize Tough Solar Quartz (No Battery Change) engineering, Casio (Japan) craftsmanship, and 100m (10 ATM) water resistance. At $150–$250, it delivers Tough Solar (Solar Quartz) with Tough Solar (Rechargeable) power reserve.

Check Price on Amazon

Casio

G-Shock DW-5600 Square

Choose the Casio G-Shock DW-5600 Square if you value Casio Digital Quartz (Battery) technology, Casio (Japan) heritage, and 42.8mm (Square) proportions. At $50–$100, the Quartz Module 3229 with 2-Year Battery power reserve makes it a compelling choice.

Check Price on Amazon

Try Prime Free — Free Shipping on Both Watches Students & 18–24: start Prime for Young Adults free

The Bottom Line

The Casio Pro Trek PRG270-1 and Casio G-Shock DW-5600 Square represent two distinct approaches to fine watchmaking — the Casio bringing Casio (Japan) tradition while Casio delivers Casio (Japan) engineering.

Frequently Asked Questions

For water, the Casio G-Shock DW-5600 Square is rated 200 m against 100 m, which is the difference between swimming and diving on one side and splashes on the other. On price, the Casio G-Shock DW-5600 Square sits a band lower ($50–$100 against $150–$250), so it is the cheaper way into the category. Neither is better at everything; the spec table above shows movement, case size, water resistance and crystal side by side so you can weigh what matters to you. We do not test units, so this is the makers' data, not a bench result.

The Casio G-Shock DW-5600 Square offers better upfront value, sitting a tier lower at $50–$100. However, the Casio Pro Trek PRG270-1 may justify its premium with superior finishing, heritage, or resale value.

Both are suitable for daily wear. The Pro Trek PRG270-1 at 54.6 × 52.4 × 15mm with 100m (10 ATM) water resistance handles everyday situations. The G-Shock DW-5600 Square at 42.8mm (Square) with 200m (20 ATM) is similarly capable. Both use Mineral Glass.

More Comparisons

Casio Duro vs G-Shock DW-5600

Casio against Casio: analogue diver or square digital

G-Shock CasiOak vs G-Shock DW-5600

Octagonal analogue-digital or the original square

Tag Heuer Carrera Chronograph vs Casio Pro Trek PRG270-1

Tag Heuer's chronograph meets Casio's timepiece

Explore These Watches

Casio Pro Trek PRG270-1 — Full Review Casio G-Shock DW-5600 Square — Full Review Browse All Guides

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.