Head-to-Head Comparison

Updated September 5, 2026

Casio Pro Trek PRG601-1 vs Orient Mako 40 Green

Casio's timepiece meets Orient's diver

Quick Verdict

The Casio Pro Trek PRG601-1 ($250–$500) and Orient Mako 40 Green ($250–$500) are closely matched timepieces at similar price points. The Pro Trek PRG601-1 emphasizes Tough Solar Quartz (No Battery Change) engineering while the Mako 40 Green focuses on Made in Japan craftsmanship.

CasioPro Trek PRG601-1$250–$500 Check price OrientMako 40 Green$250–$500 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 PRG601-1

$250–$500

Check Price Full Review

Orient

Mako 40 Green

$250–$500

Check Price Full Review

Specifications Compared

Feature	Casio Pro Trek PRG601-1	Orient Mako 40 Green
Price	$250–$500	$250–$500
Case Size	51.6mm	40mm
Movement	Tough Solar (Solar Quartz)	Automatic Caliber F6722
Caliber Type	Tough Solar Quartz (No Battery Change)	Orient In-House Automatic (Hacking, Hand-Winding)
Power Reserve	7 Months (Solar, Full Charge); 25 Months Power Save	40 Hours
Water Resistance	100m (10 ATM)	200m (20 ATM)
Crystal	Mineral Glass	Sapphire Crystal
Case Material	Bio-Based Resin / Stainless Steel	Stainless Steel
Origin	Casio (Japan)	Made in Japan

Category-by-Category Analysis

🎨

Design & Aesthetics

Edge: Draw

Casio's design language vs Orient's approach

The Casio Pro Trek PRG601-1 features a Bio-Based Resin / Stainless Steel case at 51.6mm with Mineral Glass protection. The Orient Mako 40 Green offers Stainless Steel construction at 40mm with Sapphire Crystal. Both represent their brand's distinct design philosophy and heritage.

⚙️

Movement & Performance

Edge: Orient

Tough Solar (Solar Quartz) vs Automatic Caliber F6722

The Pro Trek PRG601-1 runs the Tough Solar (Solar Quartz) (Tough Solar Quartz (No Battery Change), 7 Months (Solar, Full Charge); 25 Months Power Save power reserve) at standard frequency. The Mako 40 Green uses the Automatic Caliber F6722 (Orient In-House Automatic (Hacking, Hand-Winding), 40 Hours reserve) at 21,600 vph (3 Hz). The Mako 40 Green offers a longer power reserve.

📏

Wearability & Fit

Edge: Orient

51.6mm vs 40mm — different wrist presence

At 51.6mm, the Pro Trek PRG601-1 has a bolder wrist presence compared to the Mako 40 Green at 40mm. Water resistance differs: 100m (10 ATM) vs 200m (20 ATM).

💰

Value & Cost of Ownership

Edge: Draw

Same tier — different value propositions

The Casio Pro Trek PRG601-1 sits at $250–$500 and the Orient Mako 40 Green at $250–$500. On the specs that outlast any price: the Pro Trek PRG601-1 uses Mineral Glass with 7 Months (Solar, Full Charge); 25 Months Power Save, against Sapphire Crystal and 40 Hours on the Mako 40 Green. Service intervals are typically 5-7 years for both.

💧

Water Resistance

Edge: Orient

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

The Pro Trek PRG601-1 is rated to 100m (10 ATM) while the Mako 40 Green handles 200m (20 ATM). The Mako 40 Green offers superior water resistance.

Our Verdict

Casio

Pro Trek PRG601-1

Choose the Casio Pro Trek PRG601-1 if you prioritize Tough Solar Quartz (No Battery Change) engineering, Casio (Japan) craftsmanship, and 100m (10 ATM) water resistance. At $250–$500, it delivers Tough Solar (Solar Quartz) with 7 Months (Solar, Full Charge); 25 Months Power Save power reserve.

Check Price on Amazon

Orient

Mako 40 Green

Choose the Orient Mako 40 Green if you value Orient In-House Automatic (Hacking, Hand-Winding) technology, Made in Japan heritage, and 40mm proportions. At $250–$500, the Automatic Caliber F6722 with 40 Hours 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 PRG601-1 and Orient Mako 40 Green represent two distinct approaches to fine watchmaking — the Casio bringing Casio (Japan) tradition while Orient delivers Made in Japan engineering.

Frequently Asked Questions

The Orient Mako 40 Green is the better buy if you want a mechanical movement; the Casio Pro Trek PRG601-1 is the better buy if you want solar power and quartz accuracy with no servicing. For water, the Orient Mako 40 Green is rated 200 m against 100 m, which is the difference between swimming and diving on one side and splashes on the other. 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.

Both are priced similarly, making this a question of preference rather than value. The Pro Trek PRG601-1 emphasizes Tough Solar Quartz (No Battery Change) technology while the Mako 40 Green prioritizes Orient In-House Automatic (Hacking, Hand-Winding) precision.

Both are suitable for daily wear. The Pro Trek PRG601-1 at 51.6mm with 100m (10 ATM) water resistance handles everyday situations. The Mako 40 Green at 40mm with 200m (20 ATM) is similarly capable. The Pro Trek PRG601-1 uses Mineral Glass while the Mako 40 Green uses Sapphire Crystal. Sapphire resists scratches noticeably better than mineral glass.

More Comparisons

Orient Kamasu vs Orient Mako 40

Orient's two sapphire 200m divers

Casio Pro Trek PRG601 vs PRW3500T

Two Triple Sensor solar Pro Treks

Tag Heuer Carrera Chronograph vs Casio Pro Trek PRG601-1

Tag Heuer's chronograph meets Casio's timepiece

Explore These Watches

Casio Pro Trek PRG601-1 — Full Review Orient Mako 40 Green — 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.