Head-to-Head Comparison

Updated September 5, 2026

Casio Duro MDV106 Black vs Casio Pro Trek PRG270-1

Casio's diver meets Casio's timepiece

Quick Verdict

The Casio Duro MDV106 Black ($50–$100) offers Casio Quartz (Battery) precision in the tier below the Casio Pro Trek PRG270-1 ($150–$250). The Duro MDV106 Black measures 44mm and is rated 200m (20 ATM) Diver. The Pro Trek PRG270-1 counters with Casio (Japan) craftsmanship and 100m (10 ATM) water resistance. Both are exceptional watches for their respective tiers.

CasioDuro MDV106 Black$50–$100 Check price CasioPro Trek PRG270-1$150–$250 Check price

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Casio

Duro MDV106 Black

$50–$100

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Casio

Pro Trek PRG270-1

$150–$250

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Specifications Compared

Feature	Casio Duro MDV106 Black	Casio Pro Trek PRG270-1
Price	$50–$100	$150–$250
Case Size	44mm	54.6 × 52.4 × 15mm
Movement	Quartz Module 2784	Tough Solar (Solar Quartz)
Caliber Type	Casio Quartz (Battery)	Tough Solar Quartz (No Battery Change)
Power Reserve	3-Year Battery	Tough Solar (Rechargeable)
Water Resistance	200m (20 ATM) Diver	100m (10 ATM)
Crystal	Mineral Glass	Mineral Glass
Case Material	Stainless Steel	Resin
Origin	Casio (Japan)	Casio (Japan)

Category-by-Category Analysis

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Design & Aesthetics

Edge: Draw

Casio's design language vs Casio's approach

The Casio Duro MDV106 Black features a Stainless Steel case at 44mm with Mineral Glass protection. The Casio Pro Trek PRG270-1 offers Resin construction at 54.6 × 52.4 × 15mm with Mineral Glass. Both represent their brand's distinct design philosophy and heritage.

⚙️

Movement & Performance

Edge: Casio

Quartz Module 2784 vs Tough Solar (Solar Quartz)

The Duro MDV106 Black runs the Quartz Module 2784 (Casio Quartz (Battery), 3-Year Battery power reserve) at standard frequency. The Pro Trek PRG270-1 uses the Tough Solar (Solar Quartz) (Tough Solar Quartz (No Battery Change), Tough Solar (Rechargeable) reserve) at standard. The Duro MDV106 Black edges ahead on power reserve.

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Wearability & Fit

Edge: Casio

44mm vs 54.6 × 52.4 × 15mm — different wrist presence

At 44mm, the Duro MDV106 Black wears more compactly on smaller wrists compared to the Pro Trek PRG270-1 at 54.6 × 52.4 × 15mm. Water resistance differs: 200m (20 ATM) Diver vs 100m (10 ATM).

💰

Value & Cost of Ownership

Edge: Casio

Casio sits in the lower tier

The Casio Duro MDV106 Black sits at $50–$100 and the Casio Pro Trek PRG270-1 at $150–$250. On the specs that outlast any price: the Duro MDV106 Black uses Mineral Glass with 3-Year Battery, against Mineral Glass and Tough Solar (Rechargeable) on the Pro Trek PRG270-1. Service intervals are typically 5-7 years for both.

💧

Water Resistance

Edge: Casio

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

The Duro MDV106 Black is rated to 200m (20 ATM) Diver while the Pro Trek PRG270-1 handles 100m (10 ATM). The Duro MDV106 Black is better suited for water activities.

Our Verdict

Casio

Duro MDV106 Black

Choose the Casio Duro MDV106 Black if you prioritize Casio Quartz (Battery) engineering, Casio (Japan) craftsmanship, and 200m (20 ATM) Diver water resistance. At $50–$100, it delivers Quartz Module 2784 with 3-Year Battery power reserve.

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Casio

Pro Trek PRG270-1

Choose the Casio Pro Trek PRG270-1 if you value Tough Solar Quartz (No Battery Change) technology, Casio (Japan) heritage, and 54.6 × 52.4 × 15mm proportions. At $150–$250, the Tough Solar (Solar Quartz) with Tough Solar (Rechargeable) power reserve makes it a compelling choice.

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The Bottom Line

The Casio Duro MDV106 Black and Casio Pro Trek PRG270-1 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 Duro MDV106 Black 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 Duro MDV106 Black 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 Duro MDV106 Black 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 Duro MDV106 Black at 44mm with 200m (20 ATM) Diver water resistance handles everyday situations. The Pro Trek PRG270-1 at 54.6 × 52.4 × 15mm with 100m (10 ATM) is similarly capable. Both use Mineral Glass.

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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.